Archtober, New York City's month-long festival of architecture and design, has officially returned with a packed calendar of hybrid virtual and in-person events from October 1st through 31st.

Organized by the Center for Architecture in collaboration with numerous partners across the city, Archtober is once again presenting its popular Building of the Day series, inviting New Yorkers and visitors to explore significant buildings and sites through architect-led tours.

Take a look at the full list of featured sites below and use the Archtober Guide to NYC as your handy mobile guide.

Friday, Oct 1: Little Island
Architects: Heatherwick Studio and Standard Architects
Landscape Architect: MNLA

Saturday, Oct 2: Shirley Chisholm State Park
Landscape Architect: Michael Van Valkenburgh Associates

Sunday, Oct 3: Summit One Vanderbilt
Interior Architect/Architect of Record/Landscape Architect: Snøhetta
Building Base Architect: KPF

Monday, Oct 4: Tammany Hall
Architect: BKSK Architects

Wednesday, Oct 6: 130 William
Architect: Adjaye Associates

Thursday, Oct 7: Amant Foundation
Architect: SO–IL

Friday, Oct 8: The Waterline Club
Architect: Rockwell Group

Saturday, Oct 9: Alice Austen House

Sunday, Oct 10: Flushing Meadows Corona Park

Monday, Oct 11: National Museum of the American Indian in New York
Architect: Cass Gilbert (1907)

Wednesday, Oct 13: NYBG Edible Academy
Architect: Cooper Robertson

Thursday, Oct 14: Saint Marks Place
Design Architect: INC Architecture & Design

Friday, Oct 15: Hauser & Wirth 22nd Street
Architect: Selldorf Architects

Monday, Oct 18: 77 Washington
Architect: Worrell Yeung

Wednesday, Oct 20: 1 Willoughby Square
Architect: FXCollaborative

Thursday, Oct 21: 168 Plymouth
Architect: Alloy Development

Friday, Oct 22: Dia Chelsea
Architect: Architecture Research Office

Sunday, Oct 24: Central Library (Brooklyn Public Library)
Architect: Toshiko Mori Architect

Monday, Oct 25: Moynihan Train Hall
Architect: Skidmore, Owings & Merrill (SOM)

Wednesday, Oct 27: Daily Paper Store
Architect: 4+ Design International

Thursday, Oct 28: The Africa Center
Architect: Caples Jefferson Architects

Friday, Oct 29: 11 Hoyt
Architect: Studio Gang

Saturday, Oct 30: Northeast Bronx YMCA
Architect: MARVEL

For the complete list of events and activities from October 1–31, head over to the Archtober event list, like the Facebook page, or follow Archtober on Twitter and Instagram.