Chewing gum tycoon's memorial lies perched over wife's botanical gardens on Santa Catalina Island.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Rare collectibles from automated musical instruments to 250 unique automobiles.

Once strictly off-limits, this lower level housing curious and priceless vehicles of the Petersen Automotive Museum is now open to the public.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

The ghostly remains of an accidental sea.

A world-class observatory in the California desert.

The final resting place of a space program monolith.

The oldest attraction in Disneyland is a prehistoric stump that Walt may have bought for his wife.

Megachurch turned Catholic church comprised of 10,000 glass panes.

Decommissioned experimental solar facilities that pioneered solar energy technology.

This giant temperature attraction created some giant electric bills.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This bridge was constructed from the rubble of the infamous Bastille.

The celebrated eyesore created by starry-eyed sweethearts.

This demon atop the Notre-Dame de Paris looks utterly bored.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

A museum chronicling pioneer life constructed over Interstate 80.