Or the National Building Museum . The Kennedy Center's red-carpeted main lobby stretches the building's entire length and is illuminated by shiny chandeliers. Outside is a terrace overlooking the Potomac where, in good weather, you can watch the planes fly to Reagan National Airport. The Great Hall of the National Building Museum is similarly open and even less crowded. Tall columns soar to the ceiling, dwarfing everyone.
Children can careen around the sprawling space, ambling from column to column like little pinballs.
And then you'll wonder how to get them to slow down.