Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

A marvel of Byzantine engineering under the streets of Istanbul.

This amateur-built East African church with mismatched towers is an architectural abnormality.

An Irish Memorial commemorating those who perished due to potato blight.

Yo, Adrian!

This elaborate towering structure was once famed for its revolutionary height.

It was once the base for a series of domestic terror attacks.

The oldest continuously operating fish market in the United States.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

The privately owned cemetery that holds room for Washington's finest when they step down from life.

An outstanding and haunting glimpse of the horrors of the Great Famine of Ireland.

Wander among the abandoned ruins of this once-powerful medieval town.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

A bronze monument to Cleveland's favorite, fastest son.

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Look closely and you’ll notice that the color changes a third of the way up the tower.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

Fittingly, America's museum of architecture is itself a magnificently designed old building.