A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

A wall of chewing gum moonlights as collective art.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

Symbolic attempt to overcome the issues of life.

You were once able to challenge a chicken to tic-tac-toe at this park, which is now converted into the Aikman Wildlife Adventure.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Elaborate series of tunnels where traces of mass suicide are still visible.

This collection started by a Cornell professor once held more than 600 human brain specimens, including the one that belonged to its founder.

A failed, un-built suburb that has been going feral for decades.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

Venice's island of the dead.

A 16th-century horror show built in a lovely Italian garden.

Abandoned rock quarry now a haven for mountain bikers and hikers.

"The Most Wonderful Wonder that ever appeared to the Wonder of the British Nation."

World's largest herd of white deer populate a former U.S. Army depot.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

Where the line between entertainment and aerospace blurs.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A one-of-a-kind collection of a unique medium.

The birthplace of America's favorite fruit-flavored mystery dessert.

World's oldest operating science fiction and fantasy club, once home to Ray Bradbury and L. Ron Hubbard.