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

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

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

A somber statue commemorating a Danish merfolk-tale.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

This ultra-modern wooden boardwalk turns the ocean into a swimming pool.

Nordic giants resurrected from the sea and restored to their former greatness.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

Soaring over the Niagara Whirlpool since 1916.

This tiny home was originally a narrow alleyway.

A park where people have been going to feed friendly pigeons since the 18th century

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

This colorful gate stands as an entrance to the walled city of Old San Juan.

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

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

Built around 1723, this is the oldest surviving home in the U.S.'s oldest colonial city.

One of the oldest, tallest, and most haunted lighthouses in America.

Faded remnants of the entrance to a Mediterranean-style resort that never fully came to life.

A vast array of tropical plants collected by a vacationing couple.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

The world's largest occupied bat houses hold hundreds of thousands of flying mammals.