An old slaughterhouse now holds the largest collection of pig artifacts.

This natural hill rose another 130 feet from the debris and rubble added after World War II.

Remnants of a cone-shaped Nazi bomb shelter.

Not far from the more famous House of Juliet, visitors will find the supposed residence of her lover.

These elaborate gothic monuments honor Verona's medieval lords.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

Featuring the last fully walkable parapet walkway in Europe.

One of the tallest bell towers in Italy plays a particular melody at just two times each day.

Turtles swim in a pond surrounding a classical temple in this lush park in Vicenza.

Something's missing between the arcades of the Palazzo della Ragione in "the city of the three withouts."

A twisted steel beam from the wreckage of the World Trade Center is the centerpiece of this memorial for those who died on September 11, 2001.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

The world's oldest surviving anatomical theater, where "the dead are pleased to help the living."

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

One of the largest squares in Europe contains an entire artificial island.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

The oldest botanical garden in the world that technically isn't the oldest.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The only museum with its curator—and her pets—buried inside.

Go inside to really appreciate this 500-year-old technological masterpiece.

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.