One of the most exquisite Lycian hilltop citadels in Turkey.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

A Turkish ghost town abandoned in a population exchange with Greece.

Mountain where Jesus was first tempted by the Devil.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the first big sculptures anywhere in Australia.

An unphotographable nightly march of tens of thousands of "fairy penguins" from sea to shore.

The only pollutant in the clear blue water is sunscreen.

A small, but award-winning beach known for its literally spotless reputation.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

A controversial memorial at the place where Captain Cook met his violent end.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

These ancient sacred grounds granted amnesty to those who managed to reach them.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

Race through the maze, get your name on the sign.

This black shoreline is made up of exploded lava particles.

A towering work of stone and philosophy that was constructed using ancient Hindu science.