Achtober is New York City’s Architecture and Design Month, the annual festival of architecture tours, lectures, films, and exhibitions taking place during October. It is an event that comes to celebrate the beauty of New York architecture and to highlight its distinguished fabric. This year the program is particularly rich and interesting. Among the participants are the Noguchi Museum; the Modulighton Building by Paul Rudolph, which he designed from 1989 to 1994 as a duplex apartment (above); the Farmhouse by GrowNYC; the Navala Cemetery Landscape; S. John the Divine (1899); The Alexander Hamilton U.S. Custom House by Cass Gilbert (1907); the Navy Yard; Governors Island; and 56 Leonard Street by Herzog & de Meuron; the magical Woolworth Building and much more in the program.