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

Rising from the sea like a stone monster.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

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

The only natural cave bath in all of Europe.

Festival of Perpetual Life and Rebirth.

An industrial site turned into Hungary's most cherished natural wonder.

Museum dedicated to the terror regimes of Hungary.

The alleged vampires after which these islets are named may have actually been plague victims.

A series of waterfalls create the illusion of perpetual rainfall in this hidden gorge.

The rocky remains of an ancient Greek forest.

What once sat in the world’s spotlight is today a largely disused ghost complex.

Learn about the sweet, storied legacy of beekeeping in ancient Greece.

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

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

Cave on extinct volcano, once home to famous mathematician Pythagoras.

This wrecked ghost ship has been rusting on a Greek beach since the 1980s.

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.

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

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

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

Giant marble phalluses on the sacred island of antiquity.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

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