Its most enigmatic sculpture is a giantess with a ghostly face on her knee.

Founded by a Basque immigrant, Mexico City's oldest bakery has a history dating back to 1870.

A tribute to the disposable cups that were once manufactured here, this 68-foot-tall statue would be difficult to throw away.

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

This legendary city has been a tourist attraction for centuries.

Poseidon? No one seems to know.

This seaside sanctuary was once one of the most important religious sites for women in ancient Greece.

After a catastrophic forest fire, a Greek artist transformed scorched tree trunks outside an old sanatorium into this haunting sculpture garden.

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

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

A Byzantine-era church hidden in a wooded area below the Acropolis.

These caves secretly held national treasures during World War II.

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

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

An often overlooked ancient site in downtown Athens with substantial history (and nature).

This ancient hydrological marvel is now the base of a modern outdoor cinema.

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

A fabulously bizarre surrealist sculpture by the late artist Leonora Carrington.

This neon installation is a tribute to a Mexica god, who gave his skin to humanity.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

This museum houses two of Mexico's most impressive Aztec monoliths.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

Underneath the historic center of Mexico City, the remains of a temple dedicated to the Aztec god of the wind.