A battle between nature and architecture in the Cambodian jungle.

A quick and simple solution to Cambodia's train woes.

A former French military respite turned jungle tourism hotspot.

The walls of the iconic dome are hollow and have a secret stairway.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A historic Montreal market that was the city's agricultural hub for over century.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

What was once the largest mine in North America has left behind a hollow hill filled with bright blue waters.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

This Seattle museum displays the history of the telephone through an impressive collection of telecom equipment.

Leave a button on the jacket of this iconic Seattle clown.

The jewel of western Mexico's archaeological legacy is this tiered circular pyramid now covered in grass.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

The stoutest tree in the world.

This beautifully deceptive waterfall is something far different from what it appears to be.

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

An indigenous take on European design creates a stunning visual overload.

The "world's smallest volcano" has been used to store meals and dispose of dead bodies.

One native village in Bali lays their dead at the foot of a holy tree whose natural fragrance seems to hide the stench as the bodies decompose.

This Brazilian astronomy museum allows guests to gaze at the stars through their telescopes each weekend.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

Longest canal tunnel in the world, abandoned in the 1960s.

A centuries-old complex of hand-dug stone chambers has sheltered locals in times of trouble.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.