New site for the Louisiana Children’s Museum presents multiple challenges.

The International Spy Museum's sleek new building above existing structures on L'Enfant Plaza required an innovative structural design.

Transforming a workhorse into a show horse is difficult.

Last December, auto enthusiasts saw the made-over Petersen Automotive Museum in Los Angeles for the first time after a $125-million renovation made the once-boxy building as striking as the hot rods and vintage cars it houses.

Complex shoring and underpinning helped crews safely renovate the 1939 Art Deco-style University of California printing plant and build a 30,000-sq-ft addition encased in a sweeping metal skin.