A sculptor's dream castle turned fantastical ruin.

Rare videos and memorabilia await visitors inside this unique store.

A permanent outdoor art installation made up of more than 100 mushroom-shaped lights.

These strange large stones served as a campsite and lookout post for generations of Native Americans.

A spherical "micro-nation" in the heart of Vienna.

The site of an early Arthurian battle and the dwelling-place of prehistoric people and (possibly) an ancient race of giants.

Over fifty whirling pools left by the glacial age.

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

Destructive children, start your engines.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

A modern frieze of ancient Grecian mythological figures playing a national pastime.

This neon lit Georgian cave claims to hold the boulder Prometheus was chained to.

This grand gothic brewery has been pumping out suds for over a hundred years.