The National Museum of Civil War Medicine presents the technological techniques and changes made in medicine between 1861 and 1865, as well as the stories of those involved with Civil War-era medicine—soldiers, medical practitioners, and their families. Topics include medical education, recruitment, camp life, evacuation of the wounded, field dressing stations and hospitals, embalming, and modern military medicine. Frederick, Maryland, site of the museum, was the location of forty Civil War skirmishes and battles. The museum has an additional location at the Pry House Field Hospital Museum on the Antietam National Battlefield. This site focuses on the development of first aid and emergency medicine during the 1862 Battle of Antietam, also known as the Battle of Sharpsburg.

The museum offers exhibits, 90-minute guided tours, question and answer sessions, hands-on activities, lectures, educational programs, and research assistance. Payment is required for research assistance.

The Catonsville Historical Society seeks to preserve and share the history of Catonsville, Maryland. To this end, the society operates the Townsend House and Pullen Museum, which present exhibits of local historical interest. The rooms of the Townsend House are set up as period rooms, containing pieces from throughout U.S. history. Collection highlights include architectural and train models, prints, paintings, and local arrowheads. The society also maintains a knot garden, perhaps the oldest form of formal garden design in the U.S.

The society offers exhibits, period rooms, and a knot garden. The Townsend House and Pullen Museum are open by appointment.

The Baltimore and Ohio Railroad Station located in Silver Spring, Maryland, is one of the few carefully preserved railroad station in the state of Maryland. The station was designed in the Colonial Revival style of architecture, and today stands much as it did during its service in the mid 20th century.

The station offers guided tours, special events, and is available for rent. The website offers a history of the station and visitor information.

The U.S. Naval Academy Museum presents the historical and modern role of the United States Navy—both in times of war and in times of peace. Emphasis is placed on artifacts related to Naval officers and Naval Academy alumni. Artifacts on display include those related to the USS Constitution, the USS Monitor, Edward Preble, Isaac Hull, John Dahlgren, and William Halsey. Other collection highlights include ship models made in the 18th century.

The museum offers exhibits.

The Calvin B. Taylor House Berlin Town Museum is a residence dating from 1832, which has been furnished in period style. One wing serves as a local history museum for Berlin, Maryland. The town was once home to Commodore Stephen Decatur (1779-1820), Navy hero of the Barbary Wars and War of 1812.

The museum offers period rooms, exhibits, and concerts.

The Point Lookout Lighthouse Preservation Society has conserved the Point Lookout Lighthouse structures, returning them to their 1925 appearance. Once a month, the society opens the lighthouse to the public. The coal and buoy sheds are not accessible to the public.

The society offers informed docents who answer visitor questions during open house events.

When the Hampton Estate was finished in 1790, it was the largest home in the United States. Today, the home stands open as a historic house museum, and offers visitor a glimpse into the lives of America's elite at the beginning of the 19th century.

The home offers guided tours and exhibits on the home's history. The website offers a history of the home, visitor information, curriculum guides, teaching materials, and several photo galleries of the home and its grounds. In order to contact the park via email, use the "contact us" link located on the left side of the webpage.

A fine example of Georgian architecture, popular in Maryland in the late 1700s, Montpelier Mansion sits on approximately 70 acres of beautiful parkland. Architectural and building construction details, as well as historical research, suggest that the house was constructed between 1781 and 1785. Major Thomas Snowden and his wife Anne, original owners of Montpelier Mansion, welcomed many distinguished guests into their home including George Washington and Abigail Adams. Today, the Mansion is operated as a house museum. Select rooms have been researched and furnished as they would have appeared from the end of the 18th century until 1830. A boxwood-lined pathway runs through the garden to the original 18th-century summer house.

The mansion offers tours, educational programs, lectures, and occasional educational and recreational events.

The Maryland Historical Society is dedicated to the preservation of the diverse historical heritage of the state of Maryland, and runs a museum of Maryland history in order to showcase the society's impressive collection. The museum is located in downtown Baltimore, and is open to the public year round.

The society offers exhibits, guided tours, field trip programs, in class presentations, traveling trunks, primary source kits, and a student research center. The website offers information regarding all society programs, visitor information, and an events calendar.

LaGrange Plantation is home to the Dorchester County Historical Society, which seeks to preserve and share the history of Dorchester County, Maryland. To this end, the society operates several museums and an archive. The circa 1760 Georgian Meredith House displays decorative arts pieces and artifacts pertaining to the seven Maryland governors from Dorchester County. The Nelid Museum presents local agricultural life from colonial times onward. The Goldsborough Stable presents transportation and trade artifacts. The workshop of Ron Rue, noted huntng decoy maker; a historic food storage structure and smokehouse; and a colonial-style herb garden are also on site.

The plantation offers exhibits, period rooms, and a historically styled garden. The website offers a video tour of the Nelid Museum.