A great place to walk. It's an hour's drive from Minsk. There is parking in front of the park and on the territory, very close to the castle. The castle is of course very beautiful, everything is clean, smooth, green lawn, ducks in the pond. Entrance to the castle square is free, and inside the building itself is paid. There are a couple of cafes where you can have a budget snack, there is a hotel, a restaurant and a souvenir shop. In the area around the building itself, you can ride rented bicycles, a rental house is also near the castle. You should definitely stop by Mir Castle, if you are driving, it is nearby and everyone is interested in walking around the towers (for a fee)!
There is a lot to see in Nesvizh. The town is very quiet, it's nice to walk in it. The church is magnificent, you definitely need to go down to the tomb. But all this is doubly impressive when you know the history of the place and people, so an excursion, an audio guide, etc. are simply necessary. A very beautiful park with a pond. Well, the castle-palace itself has been carefully restored, deserves attention both outside and inside. Respect to the museum staff, painstakingly collecting artifacts.
The world and Nesvizh in one day are hard, there are too many impressions, and in the end you miss a lot of interesting things. It is better to come by car and devote one day to each castle.
A beautiful palace complex of the late Middle Ages. If there is no excursion, I recommend an audio guide - it is quite inexpensive and interesting to listen to even for school-age children. The place is very atmospheric and will be interesting to many. It is comfortable to walk around the exposition, you will not have to climb and descend the steep stairs of the castle walls (as in Mirsky), so the tour is quite suitable for elderly people too. In addition, I recommend visiting the city center, going to the local Catholic church, looking at the town hall and tasting local cuisine in the tavern (we choose by rating). It will be very picturesque on the way - I guarantee it! :)