A deeply beautiful 15th-century stepwell with a tragic story.

This restaurant is proud to be built atop a burial ground.

This 16th-century mosque is the hallmark of the African architectural legacy in India.

This 15th-century mosque is a beautiful blend of Hindu and Islamic architecture.

This beautiful 16th-century necropolis marks an astonishing feat in heritage conservation.

India's first open-air public art district sits in the heart of the country's capital.

The former Willingdon Airport started operations in 1929, in India's capital, Delhi. Now, it's used for maintenance runs and helicopter rides.

The ruins of a medieval citadel believed to be haunted by a ministry of wish-granting djinns.

Delhi's only female ruler is buried in this neglected, forgotten tomb.

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

These murals celebrate the oft-overlooked legacies of Iraqi-Jewish actresses in Bollywood.

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

A commemoration of the little-known cultural influence that Tolstoy had on India.

Time has stopped at the house where Gandhi died.

This synagogue is the only place of worship for New Delhi’s small Jewish community.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

A unique seaside cave where Aleister Crowley faked his own death.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This Gothic castle-like portal is a testament to the amazing craftsmanship of the navvies who built the railway tunnel.

Once a farm where patients tilled the soil, this asylum lost its workforce when overmedicating became common practice.