A brutalist gem towering over the heart of Milan.

A masterpiece of modern architecture that caused quite a stir in Paris, recreated in Bologna half a century later.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

A strange-looking 18th-century tower sits on a tiny islet just off Livorno.

Fragments of a massive unfinished sculpture sit near the main quad of the University of Illinois.

Artistic tombs, monuments, and a beautiful "Hall of Fame" lurk inside this cemetery.

A local student's chance encounter with Keith Haring led to the creation of one of Europe's largest murals.

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

The original place where water met land in the City by the Bay is outlined in brass.

This monastery built into a cliff hides a perfectly preserved hermit in a glass coffin.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

One of two identical monuments marking the sites of military training encampments in Peoria, Illinois.

Those belting out show tunes in this West Village piano bar might not realize it marks the site where Thomas Paine died in 1809.

This fresco-covered medieval monastery hangs from the side of a steep cliff.

New York's southernmost subway station is whimsically wavy.

Lie in a hammock where George Washington stood.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Elevated freight railway turned wildly successful urban park.

Tucked in the back of this amazing antique store is an important piece of medical history.

This opulent Pueblo Deco movie palace melds Art Deco and Native American motifs.

This ancient Egyptian obelisk still bears the wounds of World War I.

It’s said this crypt was the setting for the tragic finale of the Shakespeare play.

A once-luxurious, now abandoned hotel in the Italian Alps.

The secret medieval communication system will whisk your words above the noise of the crowd.