This tiny home was originally a narrow alleyway.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

A sharply wedged sundial marks the point at which each day in the United States begins.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

This mountaintop lake bubbles and steams in a perpetual boil, thanks to its direct link to the Earth's interior.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

This tiny museum's sizable collection is jammed into a former underground public toilet.

An encyclopedic collection of mammal penises.

Barcelona's only remaining tram system takes riders to the Tibidabo funicular.

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.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Tijuana's legendary jai alai or "basque ball" palace is now a massive music venue.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Banksy's image of a naked man dangling from the window of a sex health clinic.

This pedestrian footbridge honors Pero Jones, an enslaved African who lived in Bristol.

After protestors toppled a statue of a 17th-century slave trader, the pedestal where it once stood remains unoccupied.

A historic, reportedly haunted pub that provided inspiration for several famous adventure novels.

The unusual clock on this 18th-century market building has an extra minute hand for "Bristol time."