First planned industrial community in the United States.

Buy a token from the liquor store and you can make this beast spew flames on command.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

In the middle of a busy airport, a statue honoring the astronaut who told Houston that Apollo 13 had a problem.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

This massive, ancient stone was disassembled and then put back together again.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

These fantastically named natural pools look like something out of a Scottish myth.

A mysterious spot where the laws of gravity seem not to apply.

The final resting place of 121 victims of the RMS Titanic, 42 of which may never be identified.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

A normal, unassuming pedestrian overpass has been the demise of many, many trucks.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

This unique library spans a mighty river.

The farm toy capital of the world hosts a museum filled with toy tractors dating back to the late 1800s.

The largest glacial erratic boulder on Cape Cod.

The largest cemetery for enslaved people in Loudoun County was almost lost to history, if not for the research of a minister.

This historic hub for labor unions has survived the city's changing landscape.

This beautiful landscape is the only Sichuan-style garden outside of China.