New York architecture fanatics everywhere can rejoice: Archtober has arrived. In its fourth annual iteration, the monthlong festival throws a spotlight on the importance of architecture and design in the five boroughs, calling special attention to the city’s rich built history and exciting future. In addition to a lineup of lectures, openings, and workshops, the American Institute of Architects (AIA) New York Chapter–sponsored initiative highlights a “Building of the Day,” with on-site tours led by the architects themselves.