The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

Bangkok's men with dangerous jobs come here in search of protective talismans.

A white Buddhist temple with a golden restroom.

Enigmatic tombs and cave dwellings on the outskirts of a rural village.

Hidden beneath a restaurant, underground tunnels tell the story of Malta’s tragic role in World War II.

Dynastic Home of the De Piro Family.

These temples are among the oldest free-standing stone buildings in the world.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

This unique building in the main square stands out among the city's typically Baroque architecture.

These lesser-known Maltese catacombs date back over 1,700 years.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

Stone Age solar temple is aligned with the sun on each equinox and solstice.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

Eduardo Kobra’s breathtaking 32,300-square-foot graffiti wall took over Rio’s Olympic Boulevard.

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

A 125-meter long "tribute to the Brazilian people."

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

A serious museum dedicated to two German comedians.

One of the most easily accessible examples of the rare 1960s UFO houses.