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One of the 6 most important historical houses in Maryland, dating back to 1732.
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A hands-on children's museum with folks in period costume and "rural activities"
Hosts events and festivals all year round.
Art exhibits.
One of the oldest Lutheran churches in the United States, built in 1752.
Also has locations in Sharpsburg and Washington, D.C.. The exhibits demonstrate how medicine was practiced during the Civil War (which was a lesson in patient endurance), as well as track advances in medicine during those times.
Built in 1814, part of Frederick's reputation as "The City of Clustered Spires".