Inspiration: Berthold Haas's grotto wall at Sparky Park

On Saturday, neighbors and design & public space fans gathered a few blocks from my house to celebrate the opening of Sparky Park, a recently decommissioned power substation-turned-public pocket park.  (You might recognize it from a photo I took for our website.)  The most beautiful corner of the park is the grotto wall designed by artist Berthold Haas (pic below), who constructed the wall out of an otherworldly combination of petrified wood, locally-found fossils, shells, recycled glass and found objects.  He also painted some of the flat plaster a simply mesmerizing blue color that I just want to step into and live in.