Renzo Piano’s expansion of Atlanta’s High Museum doubles the previous museum space. What effect has the extension had on the museum? “More than one-third of the High’s collection, including works by Gerhard Richter and the team of Coosje van Bruggen and Claes Oldenburg, was acquired after the museum announced its plans for expansion in 1999. Michael Shapiro, director of the High, attributes the stepped-up interest on the part of donors and patrons to Mr. Piano’s reputation for showcasing art. This is not the first time the High has used architecture to draw attention: in 1983, it unveiled a building designed by Richard Meier that is still considered one of his most important works.”