This dramatic rail curve was once the target of a failed Nazi attack.

A local prank turned town icon.

This elaborate towering structure was once famed for its revolutionary height.

The oldest farmer's market in America is so ancient it was approved by the King of England.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The first American department store, and home to the largest operating musical instrument in the world.

This might just be the TARDIS of bookstores.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

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.

This erect, phallic geological spire wasn't always named so domestically.

For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.

The only road through the heart of Glacier National Park.

A popular rock that acted as a waymarker for American pioneers.

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

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.