The Hammond-Harwood House was built in 1774 for the 25-year-old tobacco planter Matthias Hammond of Anne Arundel County, Maryland. Collecting since 1938, the museum now housed in it has long been the home of some of the finest decorative and fine arts the state of Maryland has had to offer. Today, the museum houses one of the largest collections of paintings by Charles Willson Peale and furniture by John Shaw in the area.

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

In one of Maryland's first state parks (1907), the valley and its natural resources have been enjoyed by the Native Americans, explorers, settlers, and present-day citizens. With its source in Frederick and Carroll counties, the Patapsco serves the Port of Baltimore, and empties into the Chesapeake Bay. The Avalon Visitor Center houses exhibits spanning over 300 years of history along the Patapsco River. Housed in a 19th-century stone dwelling in the Avalon Area, the center includes a recreation of a 1930s forest warden's office. The park contains several historic sites, including the Baltimore and Ohio Railroad, the Thomas Viaduct, remains of the Orange Grove Mill, the Avalon Iron and Nail Works, and Bloedes Dam.

The park offers exhibits and tours.

The Society operates Teackle Mansion, a Federal-era, Neoclassical style house built between 1802 and 1819 by Littleton Dennis Teackle in Princess Anne, Maryland.

The house offers tours and educational and recreational events.

**Please note the mansion will be closed until June, 2011 due to restoration work***

USS Constellation, the last all-sail warship built by the U.S. Navy, is open to the public as a museum in Baltimore's Inner Harbor. The USS Constellation Museum invites guests to discover life on board the only Civil War era vessel still afloat and explore the ship's maritime history.

The ship offers exhibits, tours, demonstrations, living history events, lectures, and other educational and recreational programs.

Founded in 1990, the Glenn L. Martin Maryland Aviation Museum is a private, nonprofit corporation. The Museum's purpose is to maintain an educational institution dedicated to the promotion, preservation, and documentation of aviation and space history in Maryland—namely, the contributions of Glenn L. Martin and his successful company. On display are many items of Maryland historical significance, including industrial models of aircraft and rockets, wind tunnel models, restored and partly-restored aircraft, and many original photographs outlining the growth of the Martin Company. An effort has been made to chronologically depict this growth from its beginnings in Santa Ana, California, to its current standing as the Lockheed Martin Corporation. The Museum also spotlights aviation history in Maryland. Unknown to most, the United State's earliest manned flight took place in Maryland.

The museum offers exhibits, tours, and lectures.

Housed in an 1891 structure used 1962 by the Life-saving Service and then by the Coast Guard, the museum offers exhibits featuring the history of the U.S. Life-saving Service and of Ocean City. It also displays a mermaid collection, shipwreck artifacts, sands of the world, and bathing fashions. Aquariums feature local marine life.

The museum offers exhibits, tours, and educational programs and demonstrations.

The Baltimore American Indian Center (BAIC) is an urban American Indian Center established to assist and support American Indian and Alaskan Native families with moving into an urban environment and adjusting to the culture change they will experience. The BAIC also serves as a focal point for the Indian community for social and cultural activities and to educate non-native people about the cultures of the North American Indian and Alaskan Native communities.

The Center offers educational cultural classes and workshops, as well as an annual powwow.