Mysterious stone tower featured in many alternative histories of the New World.

Some big-name visitors have patronized this small-town library named for an oil man's daughter.

A castle on a hill once named "the most beautiful high school in Massachusetts."

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

A small burial plot formerly stranded in the middle of a road.

A collection of haunted objects and macabre oddities under one roof.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

An Ancestral Puebloan ruin that appears to burst into flames in the sunlight.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

The eroded core of an ancient volcano is now accessible by a short hike.

An artificial crater field that trained astronauts for lunar exploration.

Ancient pueblos built into the base of a natural canyon wall.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

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

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

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

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

A house carved into a rock in the 1940s.

This interpretive path lets you get up close and personal with dinosaur bones.

Metal water storage tank turned ethereal concert hall.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

A small sculpture garden that provides a microcosmic representation of California.

One of the only known surviving coconut palm trees in the entire state.