One of the most easily accessible examples of the rare 1960s UFO houses.

The telescope that discovered Neptune.

This tribute to the 16th-century composer is now an unusual shrine to Michael Jackson.

A graveyard and memorial chapel for victims of leprosy.

Acres of natural wonders left behind by a socialite-turned-gardener.

This municipal playground was co-created by the father of one of the most playful characters ever.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

Ruins of an aerial tramway that ran for only eight years.

Machinery left over from California's once thriving mercury industry now attracts artists and explorers.

An informal walk of fame in front of a Hollywood office building remembers a comedic great and his associates.

This mysterious cross appeared on a farmer's lawn in 1972 and has been attracting pilgrims ever since.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

No one really knows how these old hobby horses got here, but the herd keeps growing.