The tree is thought to be the oldest oak in Texas and was once crowned state champion for its monumental size.

A tower that pays homage to local sailors who perished under the waves.

The oldest functional consecrated church on Mustang Island.

Despite monuments in other locations, this spot in a South Dakota field is recognized by the U.S. National Geodetic Survey as the center of the 50 states.

The final resting place of the Hunkpapa Lakota leader Tatanka Iyotaka, commonly known by the English translation Sitting Bull.

This sculpture gallery is home to magnificent beasts made of scrap metal and found objects.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

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

A fitting attraction for the corn capital of the world.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

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.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

Kentucky's longest operating jail is now a spooky spot to spend the night.

A theme park featuring a replica of Noah's Ark built to the measurements specified in the Bible.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

This three-dimensional brick mural is the longest of its kind in the United States.

This unusually circular centenarian barn became a Route 66 icon.

This historic folk art garden contains a nightmare tower that claims to be the world's largest concrete totem pole.

Nature's biggest mammal swims in landlocked Oklahoma.