In the days before house numbers, these colorful signs held clues about various buildings' purposes.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

An artistic tribute to the famous singer, just around the corner from where he was born.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

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

Peace Park and the Atomic Bomb Dome.

Colloquially known as “piss alley,” this narrow street filled with tiny bars and barbecue stands looks like it was pulled straight out of “Blade Runner.”

Japanese national treasure originally built in 593 CE.

Not quite the menace it once was, this monster still has some chops.

The 10,000 Torii shrine.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

Frozen in Norway, vended in Singapore.

Singapore's landscaping project is home to 18 incredible Supertrees.

This fountain was once heralded as the largest in the world.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

Rainbow shutters decorate this former police station.

The most playful of the life-sized statues that make up Singapore's "People of the River."

This $62 million dollar temple was erected to house one little dental fragment of religious history.

Exotic, erotic, and esoteric, one artist's live-in Bali gallery brings a splash of color and madness to its surroundings.

Not the result of an accident, hurricane, or aliens, this is an eye-popping tribute to the Melbourne tram.

This Melbourne bank has unique Gothic-style architectural features and is one of the most majestic operating bank branches in the world.