The first printed Advent calendars were from Germany in the early 1900s

The first chocolate Advent calendar appeared in 1958

Chocolate Advent calendars began in 1958, when German companies first paired the traditional countdown with small pieces of chocolate behind each door. The idea spread slowly at first, but eventually became one of the most popular Advent calendar formats worldwide.

German printer Richard Sellmer revived Advent calendars after World War II

Advent calendar production resumed in 1946, when German printer Richard Sellmer began issuing nostalgic winter-town designs that became classics, later exporting them to the United States. His company still operates today, producing more than 140 varieties.

Nazi Germany replaced Advent calendars with depictions of family life under Nazi rule

During World War II, the Nazi regime banned printed Advent calendars because of religious messaging. Officials instead produced state-approved versions featuring swastikas, tanks, and Nazi symbols.

See some of the weirdest Advent calendars you can buy

Modern Advent calendars span nearly every niche imaginable. Shoppers can now buy versions filled with cheese, dog treats, hot sauce, and even sexual-wellness products, reflecting how far the tradition has expanded beyond simple chocolate countdowns.

Advent calendars have become a major seasonal driver for brands

Companies now treat Advent calendars as key holiday products, expanding production as demand surges across categories. Retail data shows beauty and self-care calendars consistently rank among the most popular, as some brands report selling out yearly, and retailers order months in advance.

A German town transforms its entire city hall into a massive Advent calendar

Gengenbach turns its 18th-century town hall into a 24-window Advent calendar attracting up to 220,000 visitors each December. Each night reveals new art, reviving winter tourism in the town.

Martin Luther is often cited as the first to decorate the Christmas tree—though the practice began decades earlier

Luther lore claims he may have been the first to link tree decorations to Jesus, as he used candles to symbolize the Nativity star. However, German bakers had adorned evergreens with apples and sweets as early as 1419 for Christmas Eve displays.

The earliest Advent was a Lent-like fast beginning Nov. 11

In 490, Bishop Perpetuus of Tours ordered Christians to fast three days a week from St. Martin’s Day (Nov. 11) until Christmas. This 40-day season—called St. Martin’s Lent—is one of the earliest documented forms of Advent.

See how Advent traditions vary widely around the world

Advent is celebrated in distinct ways across countries—Chinese Christians hang colorful lanterns, Mexicans reenact Las Posadas processions, Germans light weekly wreath candles, and Hungarians attend dawn matins—reflecting how local cultures shape the season’s preparation.

The first commercial Christmas card was created in 1843

Overwhelmed by the task of writing many holiday letters, Sir Henry Cole commissioned artist JC Horsley to design a festive card he could send to friends and family in 1843—creating and popularizing the first mass-produced Christmas card.

The printing press spread novels widely

Johannes Gutenberg's invention of the printing press in 1440 changed how writing was reproduced. It allowed multiple manuscripts to be copied via movable type rather than by hand, making more literature more widely available. Over time, that change caused literacy rates to rise, creating a market for even more literature.

A 2,000-year history of alarm clocks

Clocks have revolutionized the way we live, structuring our days into abstract, regular units and providing quantification for those who are chronically late. The alarm clock was the next obvious step: clocks which not only tell you the time but...

Easter symbols and where they actually come from

The secular Easter—bunnies, eggs, baskets, candy—is almost entirely a German import. The egg-laying hare called Osterhase arrived with Pennsylvania Dutch immigrants in the 1700s; children left out nests for it to fill, which eventually became baskets. The word "Easter" itself may trace to Eostre, an Anglo-Saxon goddess of spring, though scholars contest the holiday's pagan origins.

The unexpected origin story of the snow globe

In 1900, a Vienna tradesman named Erwin Perzy I was attempting to invent an inexpensive way to improve light amplification in hospital operating rooms. After experimenting with a glass globe filled with water, the idea for the snow globe struck. Industrious as well as inventive, Perzy eventually turned his idea into a successful business. Read the full article to learn how the invention grew to become recognized globally.

Read the original 1907 paper on the first known Alzheimer's patient

Alzheimer's disease was first identified by Dr. Alois Alzheimer in 1901, following a postmortem brain examination of a patient experiencing memory loss and other symptoms. Alzheimer's original paper was largely lost until 1995, when an English translation was published in a medical journal.

There’s some confusion over who founded the Bavarian Brewery that later became Budweiser

While many traditional histories credit German immigrant George Schneider with founding the Bavarian Brewery in 1852, an investigation from St. Louis Magazine found that it was actually started in 1857 by a fascinating German physician named Dr. Adam Hammer.

View a timeline of 3D printing technology through 2019

The first working 3D printing device was invented in 1983 and utilized stereolithography, a process in which a laser triggers a chemical reaction that hardens liquid resin. Powder-based laser sintering technology was patented in 1987, with metal-based powders first being used for 3D printing in 1997.

France's first restaurant guide helped spread the concept across Europe and the US

"Almanach des Gourmandes" was published in 1804 and featured restaurant reviews and dining advice, articulating the burgeoning restaurant culture of 19th-century France. The publication helped spread the concept and its values across the map, leading to more formalized restaurants in other countries.

Eduard Baltzer encouraged 'natural eating' in the 1860s

Historian Corinna Treitel credits the Protestant minister with inventing the concept of “natural eating” in Nordhausen, Germany, in the 19th century. Baltzer believed that people were consuming excessive amounts of schnapps, sugar, and meat, and that this behavior was having a detrimental impact on their lives. He encouraged a diet mostly of fruits and vegetables, though he was not opposed to food grown with artificial fertilizers.

The concept of CDs dates back to the 1600s in Europe

Banks in the US started issuing CDs in the early 1800s as the banking system began to take shape following the Revolutionary War. The federal government did not formally insure CDs until the FDIC was formed in 1933.

Cookies were originally used as low-stakes ways to test the temperature of an oven

In 7th century Persia, bakers used small mounds of dough to test the heat in ovens before baking larger cakes. Afterward, they'd add honey, nuts, and other items to the small mounds, creating early cookies.

The man who created Settlers of Catan was inspired by Viking tales about the journey to Iceland.

Klaus Teuber invented the game when he was in his 30s, and had his wife and children act as early test players. Published in 1995, the game has now sold over 45 million units.

The calendars of the 'Lord of the Rings'

JRR Tolkien's epic fantasy trilogy "The Lord of the Rings" is a seminal work in the history of literature partly due to its creator's obsessive focus on systematic detail—including the calendars used in the world. Take a fantastic dive into the minutiae of Tolkien's creation by learning the different approaches to time organization in the Shire or Rivendell with this dense, comprehensive resource based on Tolkien's appendices.

China has used several different calendars because of changes in government structure

For many centuries, during which China was an imperial nation, the lunar/lunisolar calendar (aka the “rural calendar”) was the basis for organizing the year. Several attempts were made over the decades to switch to the Gregorian calendar—which begins Jan. 1—but it wasn’t until the People’s Republic of China was founded in 1949 that it stuck.

In 1924, the department store Marshall Field's invented the first modern 'wedding registry'

However, there were many traditions around wedding gifts before the wedding registry was invented, too—from dowries to marriage chests. Read about the history of the wedding registry in this article.

In its famous catalog, Sears sold $600 DIY house kits from 1908 through the 1940s, resulting in an estimated 100,000 'Sears and Roebuck homes.'

Walt Disney's early film 'Alice's Wonderland' was a groundbreaking innovation in the silent film era

The history of many kitchen appliances involves unexpected discoveries and applications, including wartime radar turned hamster defroster and replacing an 'ice king' with heat-stealing boxes.

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

The Brothers Grimm were lawyers before they were storytellers, but became interested in fairy tales as they began investigating how rules and customs had been passed down through cultures.

Mid-century modern graphic designers, known for their bright colors and bold lines in advertising, also found success with children's books.

The first robot in literature may have been a 'mechanical man' in 1907's 'Ozma of Oz,' a book in L Frank Baum's 'Wizard of Oz' series.

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.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

Budweiser stores yeast derived from the original 1800s strain in a secret bunker, which only the Head of Yeast Management can access—not even the CEO

A century of Billboard issues documenting the evolution of popular music.

The original copy of the Declaration of Independence is not a pristine document, and even features a smudged anonymous handprint in the bottom left corner.

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

Elk Cloner, the first computer virus to spread in public, was written as a practical joke by Richard Skrenta, a Pittsburgh high school student.

The first image of a black hole was captured by creating an Earth-sized virtual observatory from a network of eight radio telescopes.

Up to a million Girl Scouts sell about 200 million cookie boxes every spring, generating $800 million, largely because refusing a child is frowned upon

El Niño, Spanish for 'the boy,' was named after Jesus Christ because the phenomenon resembled the weather changes observed around Christmastime.

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.

Salvador Dalí believed he was his own dead brother, who had died nine months before he was born

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

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

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

The most expensive ad of all time was for Chanel No. 5 perfume and cost roughly $33M to produce in 2004—about $57M in today's dollars.

Artificial coral reefs have been 3D printed from nontoxic, biodegradable terracotta clay, which coral polyps have used as a foundation for rebuilding marine ecosystems.

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.