This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

Where commuters walk through remnants of an ancient Greek necropolis.

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

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

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

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

These ruins of a sacred Ancient Greek temple stand next to a luxurious modern resort.

This pink watchtower served as the seat of the Greek government after independence from the Turks.

Poseidon? No one seems to know.

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

This striking sculpture of Icarus honors Greece's fallen flyers.

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

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

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

An ancient holy well said to be used by the patron saint of sailors and travelers, lost in the boggy west of Valentia Island.

This natural sea arch highlights Ireland's rugged coastal beauty.

A tribute to the incredible generosity the Choctaw Nation showed the Irish people during the Great Famine.

Wander among the abandoned ruins of this once-powerful medieval town.

The home of Ireland's last leprechauns is officially protected by the European Union.

The remains of this deep, dark mine have left behind a haunting rocky warren of tunnels.

Just another ancient, mysterious Irish stone circle.

Certain traditions prevail on the least-visited island of the Aran Islands.

The world's tallest box hedge is found in a delightful garden.