This lesser-visited World Heritage site in Athens boasts an impressive ensemble of medieval gold mosaics.

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

This historic structure has been used as a mosque, a barracks, a prison, a school, and a bakery.

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

A two thousand year old brothel uncovered in Northern Greece.

The ruins of this monumental city founded by the first Roman Emperor are strangely overlooked by most travelers.

The Cape of Good Hope is not quite as low as you can go on the African continent, but it's still geographically significant.

The first mosque in the world to receive electricity.

Controversial site of what could be Europe's first pyramid.

The remains of the last Bosnian fortress to fall to the Ottomans are still standing.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

This historic cemetery was inaccessible for several years due to dozens of land mines.

St. John the Baptist's forearm is housed in this remote 11th-century monastery.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Stockholm's narrowest alley is barely over two feet wide.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

This millstone commemorates a gruesome tale that may have been the source of the city's name.

An abstract monument to a symphonic composer.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

This church also serves as a lighthouse complete with a beacon.

In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.

These roaring primates were considered a divine creature in the cosmology of the Maya.

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.