An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Inside this building is another country within Rome, a sovereign entity without a physical territory.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This ancient market is often referred to as the oldest shopping mall in the world.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

Along this wire fence, travelers have been leaving a particular memento since 2012.

Three columns of volcanic rock shoot out of the ocean.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

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

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

This beautiful, historic church looks like something out of a simpler past.

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

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

A replica of the decorated wooden pillars Viking sailors threw overboard when finding new places to establish a settlement.

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

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

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

This tiny Hawaiian island is slowly coming back to life after being bombed during naval training exercises.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.