The ruined doorway is a portal to the building's turbulent and torturous past.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

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

This post-Ottoman era church in Athens was built by locals to serve the residents of Anafiotica

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

A Byzantine church containing the holy remnants of three saints sits atop the site of an ancient temple.

The home of Greece’s national poet sits crumbling in the middle of a popular tourist district.

This building displays the scars of the “Dekemvriana,” a dark time in modern Greek history.

This Ottoman-era church is hidden amid a busy tourist area.

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

An ancient Greek monument and a Byzantine church coexist inside this cave.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Legend says this sacred tree was a gift from goddess Athena.

A tiny Greek Orthodox church from the Ottoman era hides on a busy city street.

Savor sheep milk yogurt at the last of Athens' dairy bars.

The only statue ever crafted by award-winning animator Ray Harryhausen.

A magnificent tomb that was the final resting place of the Dukes of Hamilton.

The oldest library in Scotland was built from the remains of a church to hold a churchman's library.

Perhaps the smallest monument dedicated to one of Great Britain's longest serving monarchs.

A carved bench marks the Scottish cave that inspired the classic adventure novel "Treasure Island."

Accessible only at low tide, the deserted island is dotted with World War II ruins.

A remnant of the Roman army's presence on the coast of Scotland.

This third-generation institution is one of the last in London that still cures its own salt beef for epic sandwiches.

This sculpture encompasses the emotion of rail travel.