This stunning 15th-century royal hill fort preserves the age of chivalry in Rajasthan.

Hidden in the shadow of a rocky fortress is one concubine’s long-forgotten legacy.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

The world's second-largest sundial, made entirely out of stone.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Museum devoted to the artificial language of Esperanto.

Baroque celebration of the end of the Great Plague of Vienna.

Handsomely crafted representations of our round planet.

The final resting place for the remains of 143 Habsburg royalty.

The beautiful baroque library of the Hapsburg empire.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Stuck in the arcade of Casa Isolani are three arrows of mysterious origins.

Time has been frozen at this station since the bombing in 1980—or so it was believed.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Pilgrimage site for star-crossed lovers.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Two stone columns flank the grand Venice square, but there were supposed to be three.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.