A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

A kaleidoscopic warehouse-maze of handmade neon signs.

Bursting forth from a historic German neighborhood, these day-glo palaces are now a bright fixture in the town.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This "floating railway" is one of the world's oldest monorail systems.

Art and a pun, all in one.

A wunderkammer of mysterious objects and stories.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Started as a kitchen garden, now the second largest botanical garden in the world.

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

An eerie, derelict amusement park in Berlin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.