This small piece of forest and bog remained after the Ice Age and is home to unique species of plants and animals. A boardwalk crosses the swamp and six trails wind through different sections.

Maryland's only commercial underground caverns. Spectacular tour through brilliantly lit chambers takes 30 minutes.

Home of Civil War journalist George Alfred Townsend, monument to fallen war correspondents. Site of Crampton's Gap, fought over during Battle of South Mountain.

cozy two-room suite Close to C&O Canal, Whitetail, premier outlet. Bicyclers are especially welcome.

Hands-on STEM museum for children and families. Art room, Lego robotics, dinosaurs, trains, airplanes and sustainability more. Visit treasure gift shop.

Self-guided tour of outdoor ponds where as many as 200,000 trout are raised.

Sharpsburg 1804 landmark surrounded by Antietam Battlefield, Harpers Ferry; C&O Canal nearby. Beautiful private rooms, full country-style breakfasts. Bicycle rentals and battlefield guides available.

The National Park Service site that commemorates where 23,000 soldiers were killed, wounded or missing after 12 hours of savage combat on September 17, 1862. The Battle of Antietam ended the Confederate Army of Northern Virginia's first invasion into the North and led Abraham Lincoln to issue the preliminary Emancipation Proclamation

The only place on the canal where examples of major structures, a lockhouse, turning basin, aqueduct and warehouse, can be viewed in a half-mile stretch.