Some of the tallest ancient American ruins continue to inspire awe and curiosity.

While there are no actual snakes in the history of this crooked road, there may be a number of dead horses.

The most confusing clock in New York.

Elevated freight railway turned wildly successful urban park.

Largest Kauri tree in New Zealand.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

Home to three historic ships from the age of Vikings.

One part local history, 99 parts gruesome haunted house.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

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.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Budapest's Communist-era statues, banished to the suburbs.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

Famously misunderstood wonder of the ancient world

Macabre astrological automaton clock dating to the late 1400s.

Go surfing on this urban wave, "hacked" by local surfers.

The world's second-largest sundial, made entirely out of stone.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A giant bug impaled on a 75-foot-tall needle.

A little sculpture with a large wardrobe.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A church of bones, decorated with 40,000 human skeletons.