Minnesota's oldest and deepest mine is now an underground physics laboratory.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The famed architect designed this Minnesota gas station of the future with a lookout tower.

Horse cemetery on the grounds of Blarney Castle.

This 16th-century monastery was founded to cloister the daughters of wealthy local families.

One of Ireland's most infamous prisons for rebels including men, women and children.

The ancient tomb acts as a calendar that keeps perfect time.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Journey up the capitol building's cupola for an amazing view of Topeka.

A rainbow-colored house promotes LGBTQ rights across the street from the Westboro Baptist Church.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

The largest island on the great salt lake is home to curious creatures and strange stories.

Jurassic Park—A Still Life.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

Largest man-made excavation on earth!

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A sprawling collection of over 106,000 toys from around the world.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.