The ruins of an ancient mansion sits in front of and underneath a contemporary art gallery.

A preserved portion of an ancient Athens barrier is displayed in a hotel basement.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

A lonely medieval monastery on an uninhabited island.

Built by the Ancient Greeks, this chariot bridge is still in use today.

The Greek War of Independence was declared at this medieval Byzantine sanctuary.

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

There are many Byzantine-era churches still standing in Athens, but this is the only one with a 2,500-year-old column rising through its roof.

The historic building has preserved human organs, unusual hexagrams, and scars from a political assassination.

This beehive tomb built for royalty sat hidden for over 3,000 years.

Overlooking the harbor is a beautiful neglected mansion guarded by two Egyptian sphinxes.

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

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

The Greek island's old British cemetery feels like a forgotten garden.

This smily stone feline is meant to represent a mythical lion that almost destroyed the island of Kea.

A miniature desert appears out of nowhere on the lush isle of Lemnos, like something out of a Greek myth.

A small island with shimmering pink sands, home to loggerhead turtles and rare plants.

One of the largest single-span stone-arch bridges in the Balkans looks like something straight out of a fairytale.

A grotesque collection of wax limbs depicting the symptoms of venereal disease.

Every spring, locals see the shadowy figures of a ghost army of slain Greek soldiers descend upon this ruined fort.

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

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

Ruins of a 13th-century fortress perched above a breathtaking Mediterranean bay.

A sprawling collection of books and manuscripts about ancient Greece that would have put their famed libraries to shame.