This is the oldest Roman-made bridge in the city still existing in its original state.

This curious, round temple is the oldest still-standing marble building in Rome.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The final resting place of the poets Shelley and Keats.

A mountain pass used by Prohibition-era bootleggers to facilitate traffic into and out of Canada from Vermont.

Explore this unspoiled peninsula with 11 sandy beaches and 13 miles of hiking and biking trails (keep an eye out for soaring bald eagles overhead).

Louis Sullivan’s dark, swirling cast-iron designs envelop a popular department store in this Chicago landmark.

A library room filled with Twain’s relics, and a recovered literary treasure.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

A meticulously restored Wichita home designed by the most renowned American architect of the 20th century.

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

Site of the 1926 murder trial of Ernest Burkhart who was involved in the "Reign of Terror."

A larger-than-life monument to the overlooked women who braved Western expansion and broke down societal barriers.

This ostentatious Italianate palace of an Oklahoma billionaire is filled with several themed mini-museums.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

The Grand Canyon of Texas.

The last remaining vestige of a popular 1999 public art display.

Also known as the Cathedral of the Plains, this church holds the distinction of being one of the "8 Wonders of Kansas."

Kansas's Grassroots Art Capital welcomes visitors to Lucas through its very own World's Largest Thing.

A 20-foot-tall egg painted in a traditional Czech patterns by the Czech community in Wilson, Kansas.

This artsy public restroom is shaped like a giant john.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

The world's largest collection of mechanical puzzles is a cornucopia of analog bafflers.