One of the city’s most architecturally significant projects to rise in recent years are the two copper-clad towers at 626 First Avenue in Murray Hill known as the American Copper Buildings. Designed by SHoP Architects and developed by JDS, the twisted towers boast a rare and distinctive feature: an amenity-filled sky bridge linking the two buildings more than 300 feet in the air. According to JDS, the three-story steel truss structure is Manhattan’s first new sky bridge in 80 years. There are only a handful of residences that boast private outdoor space right on the eye-catching sky bridge—and one of them is now on the rental market seeking $12,000 per month.