McClellan's and Lee's armies fought three battles in one day to gain control passes east of Sharpsburg
The U-boat pens at Lorient, France, are a silent yet striking tribute to every man and woman brave enough to take to sea in a submarine.
100,000 rushed to the Klondike, where border between Alaska and Yukon was mist on the tundra
Once the highest-elevation U.S. Army post, Colorado's Camp Hale provided ski troops with deep snow and challenging terrain.
Settlers created fresh, colorful words and phrases to describe their land and life
For a few months in 1872-73, a mysterious equine malady brought whoa to the U.S. economy
Galloping Horse Ridge is a grueling hike for history buffs
Bombers once used the scenic sanctuary for target practice