Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A charmingly eccentric magma chaser presents his complete history of the island's eruptions since 1947, in cinematic form, just for you.

This canyon is comprised of gorgeous waters and magnificent basalt columns.

A fantastic reconstruction of a 10th-century Viking longhouse.

A giant concrete orb in far north Iceland marks the ever-shifting boundary.

Three million year old fossils are exposed for all to see on this Icelandic shore.

Walrus skulls and narwhal bones were found here while excavating a 900-year old church.

One of the most extreme deserts in the world, these snow-free valleys harbor life, despite the hostile environment.

Natural time capsule containing an alien ecosystem.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

This modern monument to pagan belief looks like it was transported straight from ancient times.

A submerged archeological park still holds the wonders of a Roman Sodom.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

An acoustic anomaly with a mysterious cause.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

The original place where water met land in the City by the Bay is outlined in brass.

These ancient giraffes are the largest known animal petroglyphs in the world.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

At high tide this strange footbridge appears to have no purpose whatsoever.