The trunks of 3,000 year-old trees lurk beneath the surface of this crystal clear lake in Oregon.

A clear blue swimming hole with hidden caves, still unexplored.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A museum dedicated to the alleged Roswell Incident.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

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

Faces carved into the cliffs create an otherworldly walking trail.

An enormous natural sandstone bridge in Kentucky.