This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

The last remaining vestige of a popular 1999 public art display.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

The four tall pillars once marked the entrance of the historic Seattle church that fought for women's suffrage and civil rights.

Famously misunderstood wonder of the ancient world

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

This historic black and white monastery is one of Bulgaria's architectural jewels.