You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

The highest point in Virginia can only be reached by passing through ponies and flowers.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

This Costa Rican topiary park is a surreal garden of unearthly delights.

The largest garbage dump in all of Central America is home to a tragic community that make their living from the refuse.

A crumbling cathedral condemned by an earthquake.

The youngest volcano in Central America.

A giant red chair bolted to a rock on a remote mossy hillside in Iceland.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

Iceland: home to volcanoes, waterfalls and, apparently, Santa?

The Arctic Circle runs through this isolated spot north of Iceland.

This stunning concert hall has become a symbol of Iceland's national recovery.

This black church sits alone among a field of lava rock.

Two volcanic lakes in an enormous crater formed in a prehistoric eruption.

A sulfuric martian landscape that looks far better than it smells.

Three columns of volcanic rock shoot out of the ocean.

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

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

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

The most powerful waterfall in all of Europe.

This elegant arc of a waterfall marks a religious turning point.