This nondescript tunnel has been featured in a number of iconic movies, from “Roger Rabbit” to “Back to the Future.”

The man who voiced Bugs Bunny, Daffy Duck, Porky Pig, and more has a headstone reading, "That's all, folks!"

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

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

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

These caves secretly held national treasures during World War II.

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

This historic structure has been used as a mosque, a barracks, a prison, a school, and a bakery.

An ancient octagonal weather station named for the eight Greek gods of wind.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

A sharp sculpture made of thousands of pieces of jagged glass.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

This aromatherapy shop and mini-museum cofounded by the Sigur Rós frontman documents Icelandic history through scents.

Iceland's tribute to its thankless civil servants.

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

Iceland's first pagan temple in 1,000 years is underway in Reykjavík.

Staves, storm-calling, and of course, necropants.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

Walk in the footsteps of the gods and straddle two tectonic plates.

Medicinal spa created with the discharge from a geothermal energy plant.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

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

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.