The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

This museum explores the history of the book, from scrolls to mass-produced objects through tools, stories, and massive cast-iron binding machinery (some of it operational).

A ring of creosote bushes that are estimated to be 11,700 years old.

A rare chance to enter an original gold mine from the 1800s.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

This island castle contains enough secret passageways to support a season of Scooby-Doo episodes.

This river island in Sierra Leone is home to impressive biodiversity and the country's first community conservation program.

The birthplace of modern China.

This museum honors the composer of “Swannee Ribber.”

A painfully obvious spy house sits right across the street from the Russian Embassy.

Boats must transform into railroad cars to navigate this Polish canal.

The first KFC is on the National Register of Historic Places.

A late-night restaurant empire was launched from this humble storefront.

The first "Hut" was actually a small brick building.

This small shop walked so America could run on Dunkin'.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

The Route 66 institution that inspired Taco Bell also served as an important headquarters for Mexican-American social movements.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

What began with a single, 357-pound chunk of the Canyon Diablo meteorite grew to be an impressive collection. 

This airport also offers travelers the chance to view thousands of years of Turkish history.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The legendary luxury train passage is commemorated with a charming museum inside its former eastern terminus.