"In a city flush with stately—and historic—edifices, the National Building Museum, which is dedicated to architecture, engineering, and design, still manages to stand out. Built in the late 19th century as the headquarters of the United States Pension Bureau, the building was modeled after a Roman palace. Past exhibitions have explored a wide range of subjects: the secret U.S. cities that were erected with the development of the atom bomb; the lives of a low-income renters facing eviction; and the architectural innovations—such as tiny houses—that have evolved as America has changed. A new upcoming exhibition examines the U.S.-Mexico border wall through the lens of architecture and design. The best time to visit is in summer, when the Great Hall is transformed into an elaborate, immersive exhibition; say, a “beach” teeming with nearly one million plastic beach balls, a glacial sea of icebergs, or a 60-by-60-foot maze." - Amy McKeever, Adele Chapin