This Balinese sea temple is thought to be guarded by the hundreds of monkeys that live around it.

Sacred waters rescued from the wrath of a volcano.

Bali's remote "gateway to heaven" is one of the most sacred places on the island.

The inky volcanic sand leads to reefs teeming with aquatic life waiting to be discovered by snorkelers and divers.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A narrow, serpentine spit of sand is constantly eroded and rebuilt by competing currents.

Whitewashed mosque contains the world's largest carpet.

Skyscraper powered by wind turbines attached between its towers.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The 28-foot granite map plots the locations of 40 theaters in New York City.

Deliciousness abounds at a Guatemalan restaurant masquerading as a pizzeria.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

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

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 prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

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

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

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

A historic structure that once housed pigeons used by farmers to help fertilize farmland.

It's believed human settlements from the Palaeolithic Age were established not far from this canyon.

A 19th-century fortress and collection of artifacts offer a tour of Saudi history.