Pettah's beautiful floating market was once a stinky canal in a sketchy industrial area.

The ruins of this old church are slowing sinking into the sand.

According to Hindu belief, this shallow island chain was created by a god with an army of monkeys.

This mesmerizing architectural wonder will take your breath away with its unusual color patterns.

A Bohemian "anti-hotel" offers off-kilter stays in Sri Lanka.

One of the few places where inexperienced snorkelers can spot a shark.

Once thought to be the Garden of Eden it holds a holy footprint claimed to belong to Adam, Buddha and Shiva.

Huge herds of Asian elephants can be seen walking, bathing, and just chilling at this Sri Lankan park.

An ancient stone fortress considered by many to be the eighth wonder of the world.

A completely underwater art museum sends a stark message about humans' impact on the environment.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

Mysterious Spanish catacombs of unknown origins.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A hidden tunnel leads to an abandoned slate quarry that's now a secret swimming spot guarded by cliffs.

A half-mile-long stretch of medieval forts built after a devastating pirate attack persists amid the modern port city.