If the forecast is looking grim, why not spend your day at Royal Museum of History? You'll be surprised just how many interesting facts you can discover about days gone by here.
This collection of historical artifacts in Korolev is well-liked by fellow travelers, so put it on your to-do list. Don't think that's all there is to do here, though. There are many more options ready for you to appreciate after Royal Museum of History. Hanoi Moscow, Lossiny Ostrov National Park, and Mytishchi Museum of Nature Protection are not far away.