The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.

A 100-year-old chair with joints "cemented by nature."

A trailblazing sovereign nation tucked in the American state of Wisconsin.

The arboretum whose marshy soil sucked up the dreams of housing developers.

A bizarre house filled with an astounding array of collections.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

A famous flea market artist's studio that's full of odds and ends.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

This historical theme park celebrates all things noodle.

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

A modern artist's primitive stone faces and unique rock instrument join Iceland's terrain with its history.

Rising from the sea like a stone monster.

A muddy alien landscape that is home to rare species of exotic plants.

This massive underground salt mine now holds a sci-fi theme park in its depths.

Moss and stone turn this waterfall into an otherworldly liquid veil.

This bone-filled cave got its name after they found 140 bear skeletons inside.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

A Romanian church built from one single oak.

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

Fascinating town where normal life interfaces with the occult.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

Parking garage where Bob Woodward met Watergate source "Deep Throat."