Several boutique and chain hotels have opened in recent years in the South Bronx; in addition, a La Quinta Inn that has been proposed for the Mott Haven waterfront. The Kingsbridge Armory, often cited as the largest armory in the world, is scheduled for redevelopment as the Kingsbridge National Ice Center. Under consideration for future development is the construction of a platform over the New York City Subway's Concourse Yard adjacent to Lehman College. The construction would permit approximately 2,000,000 square feet (190,000 m2) of development and would cost US$350–500 million.