This iconic water tower and failed bandstand is open for panoramic views once a year.

The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

The world's largest public collection of PEZ memorabilia.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.