The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

The only subterranean ping pong table in Atlanta.

This quaint museum taps into the sweet history of the maple syrup industry.

Tiki luxury on Nob Hill.

When you can't get to the Pacific, just go to Florida.

Go back 50 years with a turn on one of the park's carefully restored vintage fairground rides.

The world’s only museum dedicated to baked beans.

The enormous earthwork sculpture honors the ponies that lived and worked in the old colliery.

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

This lonely cast-iron structure is the only wave-washed lighthouse of its kind left in all of Britain.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

The only pig museum in the U.S. holds one of the world's largest collections of pig items.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

This historic motel standing at the "crossroads of America" offers a radio in every room and was saved by local protesters.

A museum dedicated to the quirky and colorful world created by Springfield's favorite son.

This beautiful example of Victorian engineering is the oldest water-balanced funicular anywhere in the world.

A million and a half tons of earth were used to create one of the world's largest land sculptures.

This gorgeous space is England's largest independent library outside of London.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

This quirky shop on a former farm is full of weird and wonderful oddities and antiques.

The world's largest collection of preserved trolleybuses.