This one-time health resort was used by aristocrats around the world.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

Relive a Polish uprising via an enormous, century-old cyclorama.

A striking public sculpture representing the period of martial law in Communist Poland.

The silly symbol for an underground protest group is now scattered around the city.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

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

An ancient iron pillar in Delhi that seems to be rustproof.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

The painted and decorated towers of this Hindu shrine were once the tallest structures in one of the oldest cities in India.

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

A complex of six forts embedded in the Rajasthan hills.

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

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

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

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

This natural hill rose another 130 feet from the debris and rubble added after World War II.

A peculiar trapezoidal building covered with wonderful humorous reliefs.

The final resting place of one of Germany's most accomplished Renaissance men.

This lurid German fountain plots the sad course of marriage from dating to death.