Where one of the worst train disasters in the country took place, leading to upgrades in rail safety.

A natural gas leak provides a flickering flame beneath a waterfall.

More than 350 million years ago, western New York was covered in a vast sea. Today, you can dig up the remains of the plants and animals that lived there.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A Mormon place of exile in Missouri.

Dedicated to the humanitarian efforts of the state's former governor.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

Piled high inside this warehouse and coffee shop are salvaged goods that span every corner of the globe.

Millions of dollars worth of sculpture decorate this Iowa city center.

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.

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

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

One of America's first dinosaur parks gives a window into Depression-era paleontology.

Every president in history is immortalized in bronze in downtown Rapid City.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

A relic of roadside lore and perhaps the first of its kind in North America.

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

One of the first intercontinental ballistic missile sites in the United States.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

This mansion was made famous by its colorful cast of owners and location along the Sante Fe Trail.