Alexis B.
Yelp
I visited George Washington's Mount Vernon for the first time a few weeks ago, and overall I think it's a place anyone interested in history should visit. With the regular Grounds Pass, you get access to the mansion, outbuildings (like outhouses, blacksmith shops, salt house, etc.), gardens, George and Martha Washington's tombs, a farm (with some pigs and sheep and other animals), a few trails, and more. While a tour of the mansion is included with the Grounds Pass, you have to select that you want a mansion tour and choose a time when you buy your tickets. The mansion tour is a walk through tour with tour guides stationed in each room; your group moves from room to room and gets an explanation from the tour guide in that room when you get there. The mansion tour was okay (it felt rushed and short and crowded), but I did enjoy walking on the grounds. We walked for an hour, so I think we saw everything that we could. Highlights were the Slave Memorial, the greenhouse and slave quarters, the views of the Lower Potomac from the patio of the mansion and the wharf, the 16-sided barn, and the tombs.
They offer additional add-on tours (some for an additional cost): the National Treasure Tour (re National Treasure: Book of Secrets), the Enslaved People of Mount Vernon, Hamilton the Musical, and an in-depth tour of the mansion. Unfortunately, I think these tours are something you have to book further in advance. I would have done the enslaved people tour, but it was sold out. (I am not sure if there is a set schedule/day for these special tours or not; I wish the website gave more information to help in planning the visit.) There are certain things at Mount Vernon that are only open seasonally - the distillery and gristmill, for example - so if you want to visit once and get everything done, I would recommend checking their website to see if everything is open.
Visiting Mount Vernon is pricey ($26 for an adult's grounds pass), but you can spend hours here if you choose. There is also a museum and an education center that we didn't get to see on this visit. For food, there is a restaurant that looks really nice and a food court that is pretty awful (standard museum/zoo food court fare), but there was a wait at the restaurant and we didn't want to wait around (you can make a reservation at the restaurant, I believe).
I would say a visit to Mount Vernon is something everyone should do once, but I'll probably do it twice (to take the enslaved people tour and visit anything we missed - the gristmill, the distillery, the museum, the education center). Definitely visit if you are interested in history and in the area.