The Municipal Art Society of New York (MAS) is a non-profit membership organization for preservation in New York City, which aims to encourage thoughtful planning and urban design and inclusive neighborhoods across the city.

The Villard Houses are a set of former residences at 451–457 Madison Avenue in the Midtown Manhattan neighborhood of New York City. Designed by the architect Joseph Morrill Wells of McKim, Mead & White in the Renaissance Revival style, the residences were erected in 1884 for railroad magnate Henry Villard. Preserved as a historic landmark, the houses comprise a portion of the Lotte New York Palace Hotel, whose main tower is to the east.