142 ceramic steps become a mosaic once a year.

The tallest structure in Italy is a remote radio transmitter in Sicily.

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

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

A dark, narrow tunnel that leads to a charming lake and waterfall.

Scores of wax baby figurines add an unusual mood to this beautiful church on the Greek coast.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

World's most expensive home.

Rock-cut cave complex filled with ancient Buddhist artwork.

Half-size replica of the Taj Mahal.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

A blooming house of worship for the masses.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

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

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

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

Legend has it a commoner volunteered to be buried alive in the foundation so that the great fortress could be built.

Fifteen Jodhpur queens left their handprints before going to their fiery death.

The oldest still-inhabited hill fort in India looks like a magnificent golden sandcastle.

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

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

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

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

Deep in the Thar desert, a temple crawling with thousands of holy rats.