This man-made mound monument was built out of soil from all across the Polish empire.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

A charming museum of natural history featuring dioramas and exhibits made entirely by college students.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

From lefty Jewish gathering site to hip cultural site in just 80 years.

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

This century-old roadside attraction is full of bizarre rock formations.

The remains of the first saint from Alaska in the Russian Orthodox Church.

Explore the dark underground corridors of this graffiti-covered former military fortification.

When ecosystems collide in the arid Southwest.

This recently restored timepiece has stood all around Kansas City.

A beloved, quirky little fountain featuring a large frog spitting water at a naked boy.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

Community bookshelf of 25-foot-tall book spines.

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

Home to the most complete dodo remains known - one head, and one foot.

Used as an example in one of the first dictionary entries for "museum" in 1706.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

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

Once the home of a hermetic monk, this cave now houses a small church.

Macabre astrological automaton clock dating to the late 1400s.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.