This hauntingly beautiful cemetery outside a medieval citadel is full of winding paths and ivy-covered graves.

A long-buried ancient ruin unearthed right in the middle of the city.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

A rather vulgar example of the transition from Latin to the Italian vernacular.

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

A beloved tribute to the Fab Four and the freedoms they inspired.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

One of the largest Buddhist stupas in the world keeps an eye out in every direction.

Sacred Buddhist home of some spiritual monkeys.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

This opulent 16th-century Maharaja’s palace is a unique mix of Hindu and Muslim designs.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

Tourists to the mountaintop Sicilian town often overlook its ancient fortifications.

This amazingly preserved Doric temple was abandoned before it was ever completed.

The castle still holds traces of the abandoned Roman fort it was built atop.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

An ancient octagonal weather station named for the eight Greek gods of wind.

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

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

The red letters in the literary pavement leading to the library form a mysterious code.

Long tunnels run under the ancient chariot racing circuit to the tower.