World's most expensive home.

A nearly unconquerable island-fort in the Indian Ocean.

Modest by day, illuminated majestically at sunset.

An extraordinary "City of Caves" carved from solid stone.

Rock-cut cave complex filled with ancient Buddhist artwork.

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

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.

The lavish, well-preserved home of a wealthy Baba Nyonya family is now a cultural museum.

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

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

Time has stopped at the house where Gandhi died.

A 19th century pearling and fishing village abandoned before Qatar's economic boom.