The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Walk through Czech history in Prague's largest graveyard.

Countless grotesque faces stare out from this eerie Prague art wall.

A Jenga-style cylindrical tower of books that appears to go on forever.

Macabre astrological automaton clock dating to the late 1400s.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

Cairns built to bring travelers good luck stretch across the land like miniature stone mountains.

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

The bright red stripes streaking across the rocks are the star feature at this Icelandic waterfall.

Eerie ruins of an abandoned medieval fishing village crumble atop an unforgiving stretch of earth.

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

These concrete domes were installed on an Icelandic bluff to honor a very specific musical tradion.

The summer tourists on these cliffs are thousands of seabirds.

The oldest steel ship in Iceland has been beached for years and is now a rusting ruin.

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

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

Three columns of volcanic rock shoot out of the ocean.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

A trio of hidden hot tubs takes advantage of Iceland's natural geothermal vents.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

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

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.