The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

Downtown Minneapolis mixed art and function by turning some of their sewer covers into works of art.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

World's largest carved onyx figure stands as a tribute to enduring peace.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

At 207 feet, one of the world's longest continuous escalators.

The site of the climactic scene from the classic horror film is now a historic landmark.

Statue dedicated to the star of an old television show.

A place to eat for on-the-run agents and espionage enthusiasts.

This striking art museum holds an amazing series of curiosity cabinets.

This area was once known for being a lawless haven for rough-and-tumble sailors, earning the maritime-themed nickname "the black sea."

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

A bypass decorated with large wooden troll carvings.

A bizarre house filled with an astounding array of collections.