Roaming bison and a spectacular view at the highest point in Nebraska.

On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.

A monument to a Polish general who fought the American Revolution and became the "Father of the American Cavalry."

A dozen U.S. presidents have stayed at the historic resort, which was known as James Buchanan’s “Summer White House” from 1857-1861.

This dam in the woods, built by Henry Ford with only manpower and oxen, holds no water and serves no purpose.

This classic red schoolhouse is said to have been where Mary and her little lamb went to school.

The oldest continuously-operated inn in the United States, once owned by Henry Ford.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

Once the world's largest reinforced concrete structure, this abandoned bridge now beckons urban explorers.

The site of Martin Luther King Jr.'s arrest as he attempted to have lunch.

St. Augustine's record-setting narrow street was designed to protect against pirates.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

Prank calls to this place, originally the "Tube Bar," inspired the creation of a Simpsons character.

This remote Colorado canyon is home to the second-largest collection of natural arches in the world.

A centuries-old shrine where Indians pray for U.S. visas.

A magical expanse of colorful street murals lies hidden within the quiet neighborhood.

Camera cars and condom bikes built from scrap and one man's passion.

One was an astronomer who spent his life chasing solar eclipses, the other helped make Emily Dickinson famous.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

Standing for over 200 years, the abandoned home of a Revolutionary War hero and later a succession of prison superintendents.

This field of concrete was once an active defense site armed with nuclear warheads.

A weathered, American Foursquare-style house originally built for lumber merchant William Wimsatt.

This unique structure is the only one of its kind in Virginia.

Belgium’s famous peeing statue has worn many hats (and coats, and pants), which are on display at this small museum.