These small, triangular, colorful houses are a staple of Madeira Island.

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

A lush oasis full of vibrant plants and striking geometric displays.

A micronation on an islet along the coast of a Portuguese island.

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

The haunting beauty of this little-visited wreck makes it a true hidden treasure.

Environmentally crucial raptors like eagles and vultures are kept and protected in this massive sanctuary.

Over 60 species of birds inhabit this colorful aviary park in South Africa.

A public urinal so pretty, it was declared a national monument.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Ship-sized kinetic sculptural fantasy.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

The final resting place to 300 Victorian-era pets hides inside the city park.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

A little slice of Japan and its aesthetics in London's Holland Park.

A living memorial to the trees London lost during the Great Storm of 1987.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

London's smallest police station is barely the size of a phone booth.

The bronze uniforms commemorate the vital role of women during World War II.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.