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

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

The humble tomb of an Argentine general, hand-built by his son using stones brought down from the Andes.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

A beautiful young girl said to have been buried alive in her coffin…

The narrowest house in Buenos Aires is less than 10 feet wide.

These small sculptures pay homage to the lovable star of an iconic Argentine comic strip.

Macabre astrological automaton clock dating to the late 1400s.

A mysterious shape catches the eye in this 16th-century painting.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

A small but industrious mining operation that allows visitors to touch precious gems while they are still in the rock.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This monumental work of art symbolizes the coming together of a previously divided city.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

This curious sculpture represents the perseverance needed to take to the skies.

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

Where commuters walk through remnants of an ancient Greek necropolis.

The heads and relics of 179 monks slaughtered by pirates are on display within this Ceonobic Monastery.

Hideout of thieves, monks, and goat-footed gods.

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

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