Exploring the Hippodrome of Constantinople

The high-tech mechanisms of the Roman Colosseum

The Roman Colosseum is one of the most iconic amphitheaters in the world and still partially stands today. Aside from its sheer size, the arena was equipped with some of the most high-tech engineering from the classical world, including sophisticated lifts, a huge retractable awning, and an underground network of tunnels, elevators, and trapdoors.

Visualizing Byzantium in the year 1200

This is a computer reconstruction of the Byzantine capital at its apogee, just before the Fourth Crusade. Alongside detailed renderings of the Hippodrome and Hagia Sophia, it includes dozens of the imperial city’s less famous monuments, many of which can still be found in modern Istanbul. The reconstruction is a work in progress, and the Byzantium 1200 X account routinely posts updates.

Rise and fall of the Byzantine Empire in 60 seconds

In 330 CE, Emperor Constantine made the bold move of shifting the Roman capital to Byzantium and renaming it Constantinople. This decision helped shape the Eastern Roman Empire, or what we now call the Byzantine Empire. Here’s how the city rose to global prominence, and why its legacy lingers today.

The ancient Games at Olympia ended after 1,500 years due to economic issues

The ancient Olympics came to an end in 393 CE, and some historians point to Christian Roman emperor Theodosius I's ban on celebrating pagan festivals. This article explores an alternative theory: a bad economy. The writers cite the Theodosian Code, which makes no mention of the Olympics, and multiple records that mention the Olympics after Theodosius' death.

The poet Martial vividly described the Colosseum’s opening games

In "Liber Spectaculorum," Martial recounts the inaugural spectacles at the Colosseum, offering graphic depictions of staged executions—some modeled on Greek myths—that took place during the midday program.

The aqueducts and cisterns of Constantinople

The system of aqueducts that supplied Byzantine Constantinople with water had more than 500 kilometers of channels. These channels fed hundreds of cisterns. The largest were open pools (one, now drained, houses an entire modern shopping center); but the most impressive were vast covered chambers like the Basilica Cistern, still a highlight of any visit to Istanbul.

Nero's 'Golden House' was the peak of Roman imperial architecture

Constructed on land cleared by the Great Fire of Rome in 64 CE, Emperor Nero's large "Golden House" included gilded rooms, multiple gardens, zoo-like enclosures, an artificial lake that housed a boat, and a giant statue of Nero himself. The palace was destroyed after Nero's death in 68 CE.

Colosseum spectators needed tickets and social rank to get a good seat

Entry to the Colosseum was free but tightly controlled: spectators presented tesserae, sat strictly by class, and risked losing their seats if they left for lunch, while senators watched in comfort and women and slaves were pushed to the top tiers.

Emperor Commodus fought as a gladiator while ruling Rome

Commodus, who reigned from 180–192 CE, scandalized Rome’s elite by appearing in the arena despite being the son of Marcus Aurelius. The ancient biography—though partly fictional—captures the shock his gladiatorial performances provoked.

See third-century mosaics inside a Roman villa, which show gladiator games

Discovered at Nennig, these third-century CE mosaics depict gladiators, animal hunts, and arena musicians. Set in a lavish villa atrium, they likely commemorated games sponsored by the estate’s wealthy owner.

The century-long debate over religious images in Byzantium

The iconoclast controversy, which tore Byzantium apart in the eighth and ninth centuries, centered on the use of sacred images (or icons) in Christian worship. The Iconoclasts (literally, “icon smashers”) regarded sacred images as sacrilegious; their opponents, the Iconophiles (“icon lovers”), defended icons as aids to personal devotion. After decades of struggle, the Iconophiles prevailed; their victory ensured that icons, and the brilliant mosaics inspired by them, remained a feature of Byzantine churches.

Roman terror was key to its centuries-long dominance

Historians like Polybius recorded Rome's violent tactics in detail, including the enslavement of entire populations and the mass killing of whole cities. Even as terror and violence proved effective in war, many Romans came to view the tactics with skepticism.

The first coffeehouse opened in Constantinople

Coffeehouses began opening in modern-day Istanbul sometime in the 1500s. These cafes quickly became invaluable spaces for gathering and exchanging news and ideas.

A medieval Italian visits Constantinople

In the tenth century, the Holy Roman Emperor Otto I sent Liudprand of Cremona, an Italian bishop, to Constantinople on a diplomatic mission. He was not successful. But the very undiplomatic report he sent back to the emperor about his experiences provides a unique – and often very entertaining – look at life and ceremony in the Byzantine capital, dramatically different from anything in Liudprand’s Italy.

Aristophanes was put on trial for his satire

The ancient Greek’s 426 BCE play “The Babylonians” criticized Athens’ role in the Peloponnesian War. The politician Cleon accused the dramatist of being unpatriotic, but that didn’t thwart Aristophanes. Two years later, Aristophanes premiered “The Knights,” which mocked Cleon, leaving him working as a sausage seller outside the city.

How the Code of Justinian formed the basis of modern law

This video explores the significance of Justinian’s Corpus Juris Civilis. The most important component of the Corpus, the Digest, collected the opinions of eminent Roman jurists. The Digest went on to become the legal framework of medieval Europe, and the basis for the civil codes used across two-thirds of the globe today—an underappreciated legacy of Byzantium.

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

An acropolis is a fortified hill, a common center point of Greek city-states

The Acropolis of Athens is the most famous of the Greek structures, the site of the iconic Parthenon standing tall over the city. It has stood for thousands of years and undergone myriad transformations through war and shifts in politics and culture.

See a collection of ancient Roman coins used on the Silk Roads

As ancient Rome's appetite for eastern luxuries grew, long-distance trade routes linking the Mediterranean to Asia emerged along what became known as the Silk Road. Without shared language or legal systems, merchants could use the reliable Roman coins to exchange with other cultures. This exhibit features gold and silver pieces bearing the portraits of emperors and Latin inscriptions.

Ancient Greek gymnasium: where philosophy met fitness

In ancient Greece, gymnasiums were not just places of physical training, but centers of intellectual life. This article explores the ways in which exercise, philosophy, and education were deeply intertwined, reflecting a cultural belief that physical fitness was essential for mental development.

Toasting goes back to at least ancient Greece

The Greeks regularly held symposia featuring wine, food, music, entertainment, and intellectual conversation, hosted by a symposiarch, who acted as emcee. The wine was often drunk in honor of Dionysus, the god of wine and ritual madness, which often led to excess.

The art of classical rhetoric

Ancient orators snapped human communication in two: the open palm of persuasive rhetoric versus the closed fist of evidence-heavy dialectic. The former seeks to convince the many via one's speech, while the latter seeks the truth in an argument. In ancient Rome, rhetoric had five "canons": invention, arrangement, style, memorization, and delivery. Loading the rhetorical canons in order was meant to help orators craft an effective and impactful speech.

Thermopolia were ancient Roman snack bars

Although they weren't exactly restaurants, with sit-down service or extensive menus, thermopolia were modest food counters for Romans looking for quick bites—often bread with fish, cheese, and lentils.

Shakespeare’s Globe Theatre burned down

During a June 1613 performance of “Henry VIII,” a theatrical cannon misfired and sent sparks into the theater’s straw roof, forcing the 3,000 attendees to evacuate. No one was killed, though the theater burned down in roughly an hour.

Crowds used a thumb gesture to decide whether a gladiator lived or died

This explainer unpacks pollice verso, the hand signal spectators used to call for a gladiator’s execution. Ancient sources never specify the direction; evidence suggests that the thumb was likely turned up or thrust toward the throat, not down.

In 1963, a basement renovation in Turkey revealed a passageway to a hidden, multilevel underground city that once housed as many as 20,000 people

Meet Hipparchus, the Greek astronomer who created the world's first star map

Astronomer Hipparchus created accurate maps of the night sky way ahead of his time, with coordinates sometimes within a single degree of modern values. Hipparchus founded a new theory of star motion, modeling the sky as a celestial sphere with coordinates similar to latitude and longitude—concepts only recently created in Hipparchus' time.

Graffiti dates back to at least ancient Pompeii, where citizens scrawled messages to one another on public walls

The 1987 Nintendo video game 'Stadium Events' isn't known for being particularly fun, but its scarcity has made it a highly sought-after item that has sold for up to $35K at auction.

See photos of Meteora, a mountainous site in central Greece, home to 14th-century monasteries perched atop soaring outcroppings.

American dance legend Martha Graham, sometimes called 'the Picasso of dance,' refused to perform at the 1936 Olympics in Berlin and conceived the piece 'Chronicle' in response to the experience.

Explore an interactive map of battles from the American Revolution, along with detailed summaries of each engagement

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by over 1.5 million Muslims.

Clever Hans was a 1900s horse that was believed to be able to solve math equations, tell time, and read and comprehend German, until a psychology student discovered how he got his answers.

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

The Mona Lisa's celebrity status and repeated restorations have obscured what made the painting so revolutionary for its time

The Russia-Ukraine conflict is the largest ground war in Europe since World War II in terms of casualties, forces mobilized, and displacement of civilians.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

Iran's Revolutionary Guard Corps is independent of Iran's regular army and is one of the most powerful and influential military-political organizations in the Middle East.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

Before the current East Wing ballroom project, only two White House renovations in the past 100 years cost more than $10M.

70 years ago today, city officials in Santa Cruz, California, banned rock 'n' roll to protect its youth from corruption after witnessing a 'provocative' concert the night before.

The syncytiotrophoblast is the outer layer of the placenta and the largest human cell, spanning an area about twice that of a king-sized bedsheet.

Explore the known asteroids, comets, and spacecraft involved in asteroid studies within our solar system with 'Eyes on Asteroids,' a 3D visualization from NASA.

American short story writer Flannery O'Connor raised 40 peacocks, which became potent symbols for her fiction's elegant violence

Watch how viruses like Ebola can spill over from animals to humans—and vice-versa.

An initial public offering or 'IPO' is the process of a private company becoming public by putting shares of the company on the stock market for purchase.

The US dollar is the most widely circulated currency in the world, and is involved in nearly 90% of global transactions

NBA superstar Victor Wembanyama spent the 2025 summer training with monks in central China to enhance his body and mind.

The rivalry between Alexander Hamilton and Thomas Jefferson centered on federalism—the question of how much power the federal government should hold relative to the states.