This is a really interesting free museum. Most of the exhibitions I have been to have been really interesting and you learn a lot. Well laid out and easy to understand. Some exhibitions are permanent but others change. They also do talks and workshops. Check online. With the ongoing pandemic, these are not as frequent but I am sure they will schedule more as things improve. There are a few floors. The museum always has a nice atmosphere. Never too busy so you can enjoy the exhibitions. Thursday they open late till 20:00. The library is also nice. There is a café as you enter the museum. I don't think the shop nor the restaurant were open from what I could see, but check as I may be wrong. Despite government guidelines changing, the museum does request that you wear a face covering unless exempt and to help with social distancing they have printed mini booklets to avoid people gathering at information boards which is also useful. Very clean. Staff are always pleasant and friendly.