Smithsonian Museums Stay Open Late for Expanded Three-Day Solstice Weekend (opens in new tab)

Cooper Hewitt Unveils Permanent Collection Galleries Showcasing a Multi-Year Presentation of the National Design CollectionFrostEG Mon., 06.15.2026 | 3:30 pm This summer, Cooper Hewitt, Smithsonian Design Museum will unveil its permanent collection galleries with a landmark presentation, “Design Across Time: Exploring the Smithsonian’s Design Collection.” Opening Friday, June 26, and on view for an extended, two-year display, “Design Across Time” will showcase a selection drawn from the natio...