Kimbell Art Museum's new building provides perfect accompaniment to Kahn's classic

FORT WORTH -- The Kimbell Art Museum, designed by the legendary architect Louis Kahn, is beloved like few other museums built in the past century. Opened in 1972, it finessed all of the design challenges that still plague museum architects today: How to be monumental but intimate, to create a space apart from yet still connected to the world, and make an architectural statement without overwhelming the art. Its parallel arrangement of 16 cycloid concrete vaults, like some Iron Age mausoleum comp...