The Field Museum will remain open the Saturday and Monday of the NATO Summit.
"Based on information from NATO officials, The Field Museum is confident it will be able to serve the public as usual," representatives said in a statement.
The museum will stay open during its usual 9 a.m. to 5 p.m. hours on Saturday, May 19, and Monday, May 21. It will close Sunday for a NATO event that evening.
The Adler Planetarium and Shedd Aquarium also will be closed that Sunday. It's not clear whether they will follow suit and remain open Saturday and Monday as well.
Museums won't have the only planned closures in Chicago on NATO weekend. Some schools have canceled planned field trips, churches have considered moving services and some stores near McCormick Place, where NATO meetings will be held, will close.
Security experts announced last week that parts of Lake Shore Drive and I-55 also will be shut down that weekend. Parking restrictions will be in place in the areas surrounding McCormick Place, with some of them beginning May 13, a full week before the event.