The rocks around this mountain are filled with so many carvings that the area became known as the "open library."

Lions carved into the rockface adorn these two tombs built into the mountains of Dadan.

Within the Saudi Arabian desert lies a 2,000-year-old ghost town made of stone and mud.

More than 100 monumental tombs carved into rock are preserved at this ancient Nabataean site in the Arabian Desert.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

Village of slate houses, built on a white marble outcrop.

Abandoned station along an ancient pilgrimage route.

These towering cliffs jut dramatically from the middle of a barren desert.

This site was once the religious, cultural, and trade center of Sri Lanka.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

This saucy statue once caused outrage among locals.

This sprawling, Brutalist estate feels like a city within a city.

Lived-in building, bedecked with an astonishing array of mirror mosaics.

Kuwait City's uniquely designed water towers look straight out of a retro sci-fi cityscape.

The site of a bloody showdown between invading Iraqi forces and a cell of the popular resistance in Kuwait.

This road earned its macabre nickname after hundreds of Iraqi troops died along it in 1991.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

Be on the lookout for the symbolic insect all over the city.

This haunted 17th-century pub was moved to a new city when it was already almost 300 years old.

Flamboyant architecture from the turn of 20th century.

A black cat protests the City Guild in Riga's Old Town.