Replica of mosque destroyed by Russia in the 16th century.

Rare recess caves fill this unbelievably beautiful Ohio park.

This great stone guardian of the forest is a relic from the land's volatile volcanic past.

A small part of Russia that does not touch any other part of Russia.

Stalin's march toward a more modern USSR flooded a monastery, leaving a unique and extravagant nautical marker, "The Flooded Belfry."

Step into the cool deep past and unknown future of who begat who.

A neutrino detector built into the largest man-made underground cavity in the world.

A once-magnificent collegiate church is falling into ruin.

This magical and eccentric stepwell is a hidden treasure within the ancient fort city of Mandu.

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

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

This peaceful Sikh gurudwara serves around 50,000 free meals every day within its gilded walls.

A blooming house of worship for the masses.

A giant repository of accidentally discovered cave paintings up to 30,000 years old.

Tucked in Mumbai’s wealthiest neighborhood is one of the city’s oldest and most sacred sites: a temple complex believed to house the waters of the Ganges.

A magical expanse of colorful street murals lies hidden within the quiet neighborhood.

The evocative ruins of a 1,000-year-old hill fort lie within a popular tiger reserve.

Bold contestants slide in a rice paddy behind two charging bulls.

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

The oldest still-inhabited hill fort in India looks like a magnificent golden sandcastle.

An eclectic mix of influences rot together in harmony in this India necropolis.

These particularly resplendent rodents are the state animal of Maharashtra.

A nearly unconquerable island-fort in the Indian Ocean.

A centuries-old lookout post still sits atop a natural stone spire.