The octagonal tower at this important Buddhist site was added many years after the temple's initial construction.

A bulky, ancient stupa marks the site of Siddhartha Gautama's seminal Buddhist teaching.

Many Hindus make the long pilgrimage to this holy city to have their remains burned on the banks of the Ganges River.

Known as the leaning temple, the sacred structure has somehow developed a severe nine-degree slant.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

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

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