The Woodlawn Manor Museum is a great place to learn about life during Colonial times in Maryland. This brick manor, from 1774, and its stone barn, slave cabin, smokehouse, one-room schoolhouse, and miles of nature trails through the meadow, offer educational programs and tours for visitors of all ages to learn about Colonial life and the barn's role in the Underground Railroad.

The Josiah Henson Historic Site was where reverend and abolitionist Josiah Henson worked on the Riley Farm as a slave from 1795-1830. After immigrating to Canada, Henson wrote an autobiography in 1849 that is thought to have inspired a character in the widely famous novel Uncle Tom's Cabin by Harriet Beecher Stowe. Visit the Riley Farm and learn more about Henson and the Riley family.

The National Capital Trolley Museum collects and shares the history and artifacts associated with the DC area's bygone days of electrical trolley and street cars. Collections include street cars from the early 1900s and many models from Europe.

The National Museum of Health and Medicine started with specimen collection and pictures taken of wounded soldiers during the Civil War for medical research, which led to becoming the research library and museum it is today. Collections include medical samples, instruments, and documentation throughout much of the history of American medicine.

The Clara Barton National Historic Site is a house museum dedicated to the work and life of Red Cross founder Clara Barton. She lived for many years in Glen Echo and her home still retains many of her original furnishings, personal artifacts, and items related to her work as a teacher, nurse, and humanitarian with the Red Cross.

The Montgomery County Historical Society preserves the history and artifacts related to life in Montgomery County over the last few hundred years. Collections range from Victorian era clothing, toys, antique furniture, agricultural tools, and other household items from the 19th and 20th centuries.