These tombs were built into the side of a mountain so that ancient angels could reach the dead.

A unique seaside cave where Aleister Crowley faked his own death.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

A solitary tree has grown up all alone on Lake Wānaka, backdropped by the beautiful Southern Alps.

This historic stone bridge has an entire neighborhood clinging to its sides.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

Once the path of a railway tunnel, now home to thousands of glowing insects.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A grove of "candelabra redwoods" deep in California's Lost Coast.

These strikingly barren, rolling red hills were caused by bad farming practices.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

3/4-scale model of the White House in Atlanta, Georgia.

The oldest church in Iceland is one of the few to feature ornate decoration.

An artificial crater field that trained astronauts for lunar exploration.

This fairytale-like structure is the last turf church ever constructed in Iceland.

Natural rock water slides hidden in the remote forests of northern Idaho.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

The library's graceful rotunda is like a bibliophile's temple.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

This quiet park's strange sedimentary spires were named after Kodak's color film.

Extraordinary sculpture garden created by an eccentric English poet.

Don't blink or you'll miss it.