A bizarre house filled with an astounding array of collections.

Flamboyant architecture from the turn of 20th century.

An incredibly well-preserved piece of ninth-century Viking poop.

Deep in the Negev Desert, the world's tallest solar tower looks like a sight straight out of science fiction.

A Jewish deli run by Yemeni Muslims in an Afro-Caribbean neighborhood is quintessential Brooklyn.

This burial mound is said to be the final resting place of Russia's first Viking ruler, Oleg of Novogrod.

This famous city eluded concrete detection until the early 2000's.

A permanent exhibition honors Queen, which recorded seven albums at the casino-based studio, including “Under Pressure” with David Bowie.

A small part of Russia that does not touch any other part of Russia.

A section of the long chain that blocked enemy ships from entering Constantinople.

One of the largest wooden constructions in Europe was meant to be a casino, but soon became an orphanage.

Step back in time and witness the fall of Constantinople.

This basilica is dedicated to two saints, one of which is known more for his famous quote.

This large, circular tomb is the final resting place of the first emperor of Rome.

This castle was once the home of one of the most powerful women of the Renaissance.

This museum is a full-size replica of an original church constructed during the 13th-century.

Roman politician Herodes Atticus built this nymphaeum to honor his wife, whom he may have murdered.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.

Its interior is adorned with some of the best examples of early Christian mosaics.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

This Italian stadium makes liberal use of fascist statuary to evoke classical sporting arenas.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.