San Francisco's newly reopened hands-on science museum.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A favorite haunt of Delhi's politicos and intellectuals, this old-school coffee shop was shut down under Indira Gandhi's Emergency.

This hidden Sufi cemetery is a spiritual monument for India's third gender community.

Ancient traditions and surreal birdwatching come into sharp relief along one of the world's most polluted rivers.

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

A startling, centuries-old subterranean marvel hides in plain sight.

Nestled among the artifacts of the National Crafts Museum, this hidden gem offers hard-to-find regional foods from all over India.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A winding path built in secret on the edge of the continent.