This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

The water here is so clear you can see the mysteriously sunken ship from the surface.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This mysterious artificial cave has long puzzled New Englanders.

A chaotic collection of maritime artifacts, art, and really whatever else happens to be around.

One of the final concrete ships built before World War II is now a crumbling breakwater.

Underground tunnels once home to crime are now back open to the public.

This tiny square mile of Canadian sand was once considered the world's smallest desert.

This extensive nuclear fallout shelter built from 42 school buses could house 500 people in its tunnels.

These hellish-looking cliffs in the Canadian Arctic have been burning for centuries.

The most northerly active sand dunes in the world have some very rare botanical residents.

The water swaps direction twice a day, whipping into a frenzy of whirlpools and rapids.

The frozen bubbles that form on the icy surface of this Canadian lake contain enough methane to create a small explosion.

The roadway bend where highway painters practice their craft looks like expressionist art.

This tiny abode has been covered in the art of the little old lady who made her life and living there.

Explore the ruins of war and maritime history along this gorgeously ferocious North Atlantic seascape.

While this is positively the smallest library in Canada, it aspires to be the smallest in the world.

Three buildings constructed of over 25,000 multicolored glass bottles.

A meditative space out of a fantasy story.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

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

A winding, blood-red tunnel of hardened lava navigable by foot.

An encyclopedic collection of mammal penises.

Walk in the footsteps of the gods and straddle two tectonic plates.