Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

The 606 is a decade in the making.

After an Illinois church was struck by lightning and burned down, Frank Lloyd Wright designed this replacement.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A historic beacon built in the aftermath of the worst maritime disaster on the Great Lakes.

Pizza with a side of fine art.

In Chicago, an empty relic of a time when neighborhood zoos were more common.

The abandoned military base looks like a post-apocalyptic wasteland.

The remains of a 13th-century Romanesque church lie abandoned on a hillside.

World's tallest cigar-shaped radio tower.

A two-way chairlift system between Zugliget and the highest point in the city.

This quaint Hungarian railway system is operated exclusively by children between the ages of 10 and 14.

Time stands still at this serene burial ground in the center of Budapest.

This hidden art nouveau gem was designed by an architect in search of a national style.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

A scene from one of Hungary's most famous novels.

The bronze creation commemorates the life and work of a beloved actor.

The largest statue of this convex, homogeneous object with just one stable and one unstable equilibrium point.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.