These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.

Rusting away on the edge of New Jersey are the remains of a Cold War missile launch site.

Perhaps the oldest vine in North America, this sprawling plant helps make a sweet wine.

The remains of centuries of copper mining appear like an alien landscape.

The artist David Nash planted a circle of trees in 1977.

A tiny village in Wales claims the name of a noble medieval hound slain for a crime he didn't commit.

A subterranean playground in an abandoned slate mine.

The stately remains of Llywelyn the Great's mighty fortress.

This ancient castle has been abandoned since the Edwardian conquest of Wales.

A 19th century grave house with a unique message formed by the stone supports to the railing around the walls.