The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

The final resting place of the great navigator, or maybe his brother.

The world's largest wooden structure.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

The actor best known for slapstick comedy is memorialized in his home town.

In 1952, a strange encounter in the woods of West Virginia led to the legend of a 10-foot-tall monster with glowing eyes and a distinctive style.

A melancholy guardian doubles as a judicious godmother to this small town cemetery.

This university transit system is a 1970's vision of the future.

Home of a 28-foot tall stalagmite known as the War Club.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

America's post-nuclear-attack chambers of Congress.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.