This 17th-century structure is a beautiful testimony to traditional Persian architecture

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

The second tallest railway trestle bridge in America.

A bike being "eaten" by a tree is the real Vashon legend behind popular children's book, "Red Ranger Came Calling."

The smallest country in the world.

A wacky, UFO-shaped house in a suburban neighborhood.

Medicinal spa created with the discharge from a geothermal energy plant.

A part of the world's largest marsh seems to be growing bright red Martian grass.

A fifth-century temple improbably built into the side of a cliff.

This abandoned fishing settlement may well be the greenest village in the world.

The most famous location in China was home to whole dynasties worth of imperial rulers.

A canvas of crops grow from vibrant red soil in this terraced farmland.

A total of 999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.

Intensely colorful calcite pools in Southern China.

The field of tiny caves that mark this Chinese cliffside are each their own historic Buddhist temple.

A sacred mountaintop temple offers a fine cup of tea to visitors who can survive the journey.

The largest statue in the world towers at 420 feet high atop another 66 feet of pedestal.

A harrowing trail up a mile-high mountain.

In Northeastern Iceland lies something of an oxymoron: a steaming desert.

Monks turned this mountain into a temple by digging grottoes, tunnels, and a huge pagoda-like hall.

The third-tallest statue in the world depicts the "Buddha of Infinite Light," complete with observation deck in his chest.

The world's largest reclining Buddha, the Giant Buddha of Mudon.

A golden temple atop a sacred mountain, known for its giant effigy of the revered Pu Xian.