Places diggiosity Wants to Go

This massive monument was unveiled the day Kosovo declared independence from Serbia.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

While the U.S. and Soviet Union were engaged in a space race, Poland built a UFO on the ground.

This ancient tree in the middle of a street united the community in an effort to preserve it.

The hollow trunk of this 650-year-old tree was used as a hideout by two Jewish brothers during World War II.

The site of one of the largest prison escapes of World War II.

A miniatures park with a model of Wolf's Lair as it looked during World War II.

This hilltop ruin is of the hundreds of stone columns built in tribute to the first German chancellor.

This lakeside bunker complex in Mamerki, Poland, housed the Supreme Military Command of Nazi Germany during World War II.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

Built to transport German U-boats through the never-completed Masurian Canal, the locks near this Polish village are now home to a rope course.

A bronze statue to commemorate an Auckland library's beloved feline resident.

The Sighignola summit on the Swiss border offers views so breathtaking it's been named one of the most beautiful places in Italy.

This trail was once used to smuggle cigarettes, sugar, and other black market goods between Italy and Switzerland.

The colonial home of Paul Revere during the American Revolution.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

This historic patch of real estate offers a glimpse of colonial Boston.

A more than 260-year-old crypt built on Boston's oldest English burial ground.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

Harry Houdini plunged into the Charles River and performed one of his escape acts here in 1908.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

No one messes with the Massachusetts sacred cod, not this time...