This triangular lighthouse is one of the most modern in the U.S.

Soldiers’ scrawls turned into history’s signatures.

Travel back in time aboard a restored 1950s-era railcar.

Experience the pivotal Civil War battle at this interactive museum.

This Pennsylvania structure, the oldest building in Gettysburg, was once a stop on the Underground Railroad.

According to legend, the Devil left a footprint behind after an epic showdown with a traveling priest.

This cave column thousands of feet below the earth’s surface is rightly named for one of the most colorful park rangers in history.

This 1863 adobe building is home to one of the oldest operating saloons in the Southwest.

This oldest brewery in the U.S. has lived through fire, Prohibition, and six generations of family ownership.

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).

There are many ways to enjoy this old-growth forest and its views.

The first of the iconic American roadside attractions lives on as a college mascot.

The oldest building in Charleston was used to store gunpowder during the American Revolution.

Earliest version of the American flag can be seen atop the hill where it first flew.

A snapshot of Scottish folklore and magical heritage.

Pennsylvania's largest cave in Laurel Highlands becomes its first underground state park.

A rich collection honors the iconic American artist, down to the jacket worn in his “Freedom of Speech” painting.

Chase waterfalls, hiking trails and more.

Sleep in a Frank Lloyd Wright-designed home or dine in the treetops in this architecture park.

Witness these plains giants that nearly became extinct in the late 1800s.

An office built to look like a giant basket.

One of the oldest remaining Catholic churches in England is home to the hand of a 7th-century saint.

A unique tribute to the millions of animals who served and died for the British military.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.