The DAR Museum was fabulous. No, I'm not into geneology or a DAR person, but I was told to try it out when I was up there a few years ago.
It is free, and it has a tour which consists of individually decorated rooms for each state in the union. The individual states used artifacts, antiques, and memorabilia to create a snapshot of their state during one period of history. Some were backwoods. Some were Victorian era. Some were colonial.
One thing that blew my mind was in the Massachusetts room, they had a tea chest from the Boston Tea Party. It was beautiful! I didn't know tea chests were decorated. I also loved the New Jersey room. It had pieces of wood that had been found underwater which were parts of gunrunning boats from the American Revolution. They had been repurposed into artwork.
If you like history, I recommend it. It also has the nation's largest library for geneologists. I don't have Tombstone Twitch, so I didn't care about that but it was impressive.
Here's a link to the tour of rooms: