Temples adorned with intricate, erotic sculptures make up one of the "seven wonders" of India.

Its interior is adorned with some of the best examples of early Christian mosaics.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

This is the oldest Roman-made bridge in the city still existing in its original state.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

The Hungarian biochemist whose research helped develop mRNA-based vaccines for Covid-19.

The second-longest continuous wall on the planet protects a hidden secret in the deserts of India.

This small and unknown museum recounts the life of Mirabai, a remarkable mystic saint of the 16th century.

There are millions of temples in India, but only one prominent temple dedicated to the Hindu creator god.

A former bastion of Rajput chivalry, this massive hill fort is the site of legend and tragedy.

A complex of six forts embedded in the Rajasthan hills.

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

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

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

More than 2 million Olive Ridley sea turtles are hatched from this mass nesting ground every year.

This abandoned fort is said to be the most haunted place in India, so much so that entry is prohibited after sunset.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

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

Time has stopped at the house where Gandhi died.

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

An unassuming tomb houses an important milestone in Indian architectural history.