The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

An abandoned castle owned and ignored by Masons carries a cursed history.

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

This 880-acre facility is home to a massive collection of vintage motorcycles and cars, as well as a 2.38-mile race course.

This fountain was commissioned by a mother grieving over her son's passing.

Monument to the cotton-destroying boll weevil.

A natural history museum with an extensive collection of bird dioramas.

The country music legend's grave is surrounded by Astroturf because fans kept plucking out the grass.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

This architectural triumph is the only Frank Lloyd Wright house in Alabama.

The exact whereabouts of this surreal cabinet of curiosities are rarely the same place twice.

A small Richmond island dotted with the remnants of hundreds of years of history.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

These massive concrete balls were used to mine gold in Virginia.

The airport was once a Civil War battleground, and the earthwork defenses can still be seen today.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

A mud brick kasbah with a history of lavishness and traitorship.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.