This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

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

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

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

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A massive Montreal stadium that has seen nothing but trouble since its inception.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

Three hundred years of preserved Spanish colonial history in San Antonio.

A starship has landed in Texas, a welcome break for weary travelers from a drab stretch of I-35.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A museum dedicated to exhibiting remarkable outsider art.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

The site of the climactic scene from the classic horror film is now a historic landmark.

At 207 feet, one of the world's longest continuous escalators.

The world's largest fully steerable radio telescope.

The only recreation of William Shakespeare's indoor playhouse.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.