When flour explodes, it's not a pretty sight.

The only arched bridge made of stone on the entire Mississippi River.

An old soap company building now houses one of Minneapolis’s oldest independent non-profit art galleries.

This taxidermic smorgasbord was co-created by an artist poached from the Museum of Natural History.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

A museum within a museum, devoted to history's most questionable medical devices.

World's largest carved onyx figure stands as a tribute to enduring peace.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

Home to more than 13,000 pieces of war memorabilia and military equipment.

Secret North Korean passage discovered below the world's most dangerous border.

Numerical symbolism abound at East Asia's oldest observatory.

Breathtaking and huge 430 year old maps of Italy.

The middle finger of modernity.

Venice's island of the dead.

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

A fake Transylvanian castle houses a cathedral of antlers.

Museum dedicated to the terror regimes of Hungary.

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

Architectural monsters are devouring this palace's every door and window.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.