Visible Vault: Open Collections Storage at the National Building Museum. Photo: Stephen A. Miller, StudioM13. WASHINGTON, DC.- The National Building Museum provides unprecedented access to thousands of artifacts that have been stored behind closed doors, some of them for decades. Visible Vault: Open Collections Storage is a new permanent exhibition that showcases both significant and commonplace historical artifacts ranging from the 1800’s to the present day. This exhibition offers a rare opportunity for visitors to experience the breadth and depth of the Museum’s permanent collection, shedding light on America’s architectural and design heritage in a dynamic, accessible way.