101 Spring Street, New York City. Donald Judd purchased this building in 1968, and used it as a testing ground for exploring the spatial relationships between art and architecture; I can see by how Judd opted to orient seating towards the wood stove versus the kitchen that an occasional pragmatic concern took precedence. Listed by the National Trust for Historic Preservation, the property will reopen for public tours after this year's renovation. juddfoundation.org