The Smithsonian’s Hirshhorn Sculpture Garden in Washington, D.C., will reopen on October 31 after a four-year redesign led by architect-artist Hiroshi Sugimoto.

The project is part of a broader redevelopment of the museum led by Selldorf and SOM. It was previously the subject of debate and objections from the Cultural Landscape Foundation.

The redesign repairs aging infrastructure and reorganizes the 1.3-acre site to accommodate 60 artworks, a 50% increase from before, along with nearly 30,000 new plants and trees.

Sugimoto’s scheme responds to Gordon Bunshaft’s original garden design with hand-hewn, dry-stacked stone walls made from 950 tons of stone to define outdoor galleries and separate viewing spaces.