
23,000 soldiers were killed, wounded or missing after twelve 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.

Want to live on the edge? Visit a place recreated each day by ocean wind and waves. Life on Assateague Island has adapted to an existence on the move. Explore sandy beaches, salt marshes, maritime forests and coastal bays. Rest, relax, recreate and enjoy some time on the edge of the continent.

Clara Barton dedicated her life and energies to help others in times of need - both home and abroad, in peacetime as well as during military emergencies. Glen Echo was her home the last 15 years of her life, and the structure illustrates her dedication and concern for those less fortunate than herself.

The George Washington Memorial Parkway was designed for recreational driving. It links sites that commemorate important episodes in American history and preserve habitat for local wildlife. The parkway and its associated trails provide a scenic place to play and rest in the busy Washington, DC metropolitan area.

Hampton National Historic Site preserves what remains of a once 25,000-acre enslavement plantation. For hundreds of years, enslaved people, indentured servants, tenant farmers, paid laborers, and the Ridgely family all made their own contributions to Hampton, creating a space where cruelty and decadence collide to provide a complex history of the United States.

In 1776, Thomas Stone and 55 others signed the Declaration of Independence. In doing so, Stone risked his home, his family's security, and even his life to support the Declaration of Independence's promise of freedom.