This massive water spout has been luring visitors for hundreds of years, some to their death.

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

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

This historic observatory contains the world's oldest refracting lens telescope.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

A clear example of the process of erosion in action.

One of the best beaches in the entire world.

The cathedral stands in New Jufa, Isfahan's Armenian quarter that was established in 1606.

One of the holiest Shi'i shrines in Iran honors the life and death of a learned noblewoman who became a saint.

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

This lake in northwest Iran has started turning from green to red more frequently than scientists are comfortable with.

Burial site of a Jewish prophet revered in Iran.

Named after a legendary garden called Eram in southern Arabia, built by order of Shaddad, an Arab king who wanted to compete with Paradise.

A dreamy mausoleum honors Persia's most famous poet.

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.

In this tiny Iranian town playing on the roof isn't just encouraged, it's the only place to go.

17th century mosque for Shah Abbas' harem.

The ancient necropolis houses the immense rock-cut tombs of four Persian kings.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

The palace of the King of Kings, burned by Alexander the Great.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

Iran's colorful terraces are a rare geological masterpiece.