A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

Everything in this miniature world was handmade from matches, paperclips, wires, tin cans, and other everyday objects.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

Colorado's only true geyser is hidden within the San Juan National Forest.

A recreation of an Old West apothecary full of curios.

This bird-shaped rock formation defies gravity, time, and classification.

A frozen oasis lies beneath the scorching New Mexico desert.

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

This 19th-century church is now a popular roller rink.

These subterranean storage areas hold emergency water reserves.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

A museum befitting the city responsible for supplying the majority of the world's LSD.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

The ghostly remains of an accidental sea.

A monument to a one-legged kidnapper, horse thief, and charlatan asks visitors to throw rocks in a pile.

An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

This mysterious petroglyph evokes the ancient swastika symbol but was later vandalized with the more troublesome Nazi one.

The biggest pinball arcade in the world has over 600 pinball machines, and 300 arcade machines.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

This little blue house pokes out over the campus of UC San Diego, seven stories high.