An obscure waterfall that looks like something out of a fantasy novel.

This former coal gasification plant found a curious second life as a popular public park.

These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

Iconic rock formations that allow for exploration during high or low tide.

A tiny, forgotten park of surrealist sculptures in Angouleme.

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

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

Pilgrimage site for star-crossed lovers.

The fairy tale castle of the "fairy-tale king."

The prototype for all Nazi concentration camps.

A surreal statue honoring Prague's favorite literary son.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Macabre astrological automaton clock dating to the late 1400s.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

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

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.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.