Public water fountains built during the Ottoman Era still stand throughout this seaside town.

An islet filled with wooden houses where the open sea meets a lagoon.

This quaint farm in the Peloponnese countryside hides an astonishing cache of antique curiosities.

The nuns here cultivate silk to weave some of the finest scarves in the world.

According to legend, this cavern holds the passage that Persephone used to travel to and from the underworld.

This 200-meter-high waterfall marks the site of Achilles’s immortal baptism at the mouth of the River Styx.

This medieval "painted village" is famous for its geometric facades.

The rocky remains of an ancient Greek forest.

A little-known park with unusual, half-ruined structures and a mystical energy.

Poseidon? No one seems to know.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

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

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

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

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

The symbolic center of Ireland, this summit also offers panoramic views of the countryside.

The oldest olive tree in Greece has been bearing fruit for at least 2,000 years.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

This 50-foot-deep sinkhole created in the 14th century is home to rare plants and fungi.

This unique building in the main square stands out among the city's typically Baroque architecture.

Stone Age solar temple is aligned with the sun on each equinox and solstice.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

This museum in the famously blue neighborhood of Sidi Bou Saïd showcases a traditional Tunisian lifestyle.

An ancient burial ground believed to have been used for ritual sacrifice.