The oldest continually operating golf course in the United States.

This four-story steel sphere in Maryland was used to test biological weapons.

The world’s first stop-motion film was created on the racetrack outside this building.

This former Cold War missile control site played an important role in the creation of GPS.

The same security that protects our nukes accidentally protected a gentle herd of antelope.

A fine mixture of the old and the new topped with an art deco neon spire.

A saloon and inn that served the Wild West's most iconic figures—and is still haunted by some of them today.

The last standing puppet theater on Long Island.

A B-17 bomber stands as a memorial to the residents of Tulare County who served in World War II.

Visitors to this public park will also find the ruins of an old western fort.

Inside this old train depot resides a multi-line model train covering western North Carolina.

Fifty years after a “blast blasted blubber beyond all believable bounds,” this idyllic natural area commemorates the carnage.

One sculptor's lifelong war game is the largest and longest running miniature campaign in history.

The ruins of this former mining boomtown once housed over 3,000 people. Now, the population is two.

The only house built with a turret, crenellations, and a moat in Palmer, Alaska.

This 19th century machine put animals (including humans) in boxes to study how they metabolized calories.

This decommissioned surface-to-surface missile resides outside the American Legion Post in Pennslyvania.

Indiana's shrine to the sport that has become a hallmark of their culture.

The Internet Age began with a transmission from this biker bar.

This fully intact Neoclassical-Greek Revival style firehouse operated until 1938.

Thousands of crosses and markers for soldiers who lost their lives in Iraq and Afghanistan blanket a California hillside.

Featuring the the longest lift span of any vertical-lift bridge in the world.

This historic aviation building is now a museum owned and operated by Disney.

California's oldest existing theater building hosted an impressive cast of celebrities, including hosting Mark Twain's first lecture.