Before she died in 2007, Linda Pace, heiress to a salsa fortune, encountered a red building in a dream. She presented a sketch of the building to architect David Adjaye in hopes of creating a space that could showcase her art collection. Adjaye, now world renowned, has finally realized Pace’s dream. In October, the glittering crimson museum, dubbed Ruby City, will open down the street from Pace’s current gallery, offering the sites’ visitors the chance to see works by artists such as Alejandro Diaz and Do Ho Suh completely free of charge. —Wilder Davies