Visit the monolithic tomb of America's most famous general.

This diesel train serviced the Brooklyn waterfront for more than three decades.

Rummage through this sunken ship, but leave your scuba gear at home.

Elevated freight railway turned wildly successful urban park.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.

This 18th-century former mosque held the first Hellenic Parliament.

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

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

This church is dedicated to the patron saint of seafarers.

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

The hallucinogenic center of the ancient world.

Where commuters walk through remnants of an ancient Greek necropolis.

A man's head is enshrined beneath a statue near the first building constructed for the modern Olympic Games.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

Preserved portions of Athens's ancient defenses are on display in a subterranean parking garage.

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

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

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

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.

The bones of two medieval royal lions were discovered at the historic fortress.

A tribute to an explorer and naturalist often overlooked by history.

The monster at the center of the Darwin Center Spirit Collection.