Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

This cemetery features modernist statues as strange as its name.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This semi-secret storybook hedge maze is also the oldest garden in the city.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

One of the first amphibian migration tunnels in the United States encourages a tradition that has inspired Amherst residents for decades.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Where Santa Claus held up a Texas bank and started a statewide manhunt.

With a floor made of thick glass, this observation deck offers a full view of Sunwapta Valley's mountains and rivers.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

A painfully obvious spy house sits right across the street from the Russian Embassy.

A tribute to the incredible generosity the Choctaw Nation showed the Irish people during the Great Famine.

A Jenga-style cylindrical tower of books that appears to go on forever.

The oldest liquor store in the country is a model of resilience and mischief.

One of the earliest—and most commonly forgotten—acts of rebellion against English rule.

Who said a biker bar is no place for a taxidermy squirrel collection?

This (occupied) house is 10 feet wide and full of spite.

A charming monument to a very special dog.

A total of 14 men held the title of "president" before George Washington—their historical legacies are enshrined in the lobby of a hotel.