Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

This geothermal hot spring hides beneath a slowly growing mineral dome.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

Medical history museum featuring a lovely doctor's office from the 1800s.

Old car parts and assorted materials get turned into one man's mechanical treasures on the side streets of Cleveland.

This moving cemetery sphere is a slowly rolling stone.

Come for the springs; stay for the mud bath.

The larger of two volcanic peaks rising out of the crystalline waters of the Caribbean.

Hidden inside a gift shop that doubles as a museum, this gargantuan yo-yo can only be operated by crane.

Take a drunken tour inside the world's largest known geode.

A county library in rural Ohio houses one of the finest mineral collections in the world.

The largest earthwork effigy in the world.