8. 550 Madison Avenue Garden, Midtown
550 Madison Avenue, originally built in 1984 for single-tenant occupancy, is a postmodern skyscraper in Midtown Manhattan. This building has become a model of sustainable adaptive reuse for adapting to the contemporary workforce and the city. Snøhetta led the redesign of the public space and exterior renovations of 550 Madison, opening up the private boundaries along the west end of the tower to a densely-vegetated garden space that welcomes all passersby and New Yorkers.