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Alexander Hamilton US Custom House/ Smithsonian National Museum of the American Indian One Bowling Green/ Broadway, New York hours Sat:Closed Sun:Closed Maximum people: 25 per tour building date: 1907 architect: Cass Gilbert Completed for the Customs Service in 1907, this Beaux-Arts landmark is now home to the Smithsonian Institution's National Museum of the American Indian and federal agencies. subway: 1 to South Ferry, 4, 5 to Bowling Green, R to Whitehall St/South Ferry. bus: M6.        
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Alley Pond Adventure Course Winchester Blvd entrance/ Under Grand Central Pkwy, Flushing hours Sat:Closed Sun:Closed Maximum people: 40 per tour building date: unknown architect: unknown Set among the Alley Pond Wetlands and Nature Preserve, the high-and-low ropes course offers fun and exciting group activities, comprised of physical and intellectual challenges that help build leadership and problem solving skills. subway: 7 to Flushing-Main St. to buses. bus: Q12. 
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Apollo Theater 253 W 125th St/ Frederick Douglass Blvd, New York hours Sat:Closed Sun:Closed Maximum people: 50 per tour building date: 1914 architect: Georger Keister other architects/consultants: restoration, Barr & Barr, Beyer, Blinder, Belle Architects & Planners, Jones Lang LaSalle, Two Twelve Associates, 2001-ongoing. One of Harlem's, NYC's and America's most iconic and enduring cultural institutions. Since 1934, the Apollo has been at the forefront of African-American music, dance and comedy. subway: A, B, C, D, 2, 3 to 125th St. bus: Bx15, M2, M7, M60, M100, M101, M102. other transportation: Metro North (Hudson Line) to 125th St. 
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Arsenal, The 830 5th Ave/ 64th St, New York hours Sat:Closed Sun:Closed Maximum people: 30 per tour building date: 1847-1851 architect: Martin E. Thompson Built to house munitions for the NYS National Guard, The Arsenal resembles a fortress with its crenellated cornice and rooftop turrets. Now NYC Dept of Parks & Recreation headquarters, the building has served as a police station, zoo, weather station and the first American Museum of Natural History. Its treasures include WPA lobby murals, original drawings of Central Park and roof gardens with spectacular views. subway: N, R, W to 5th Ave. bus: M1, M2, M3, M4.
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Atlantic Avenue Tunnel, The SW corner of Court St & Atlantic Ave, Brooklyn hours Sat:Closed Sun:Closed Maximum people: 60 per tour building date: 1844 architect: unknown Officially the world's oldest subway tunnel, it was constructed in seven months using only hand tools and primitive equipment. It was built to provide grade separation for early Long Island Rail Road trains that lacked brakes good enough to operate on city streets. subway: M, N, R, 2, 3, 4, 5 to Borough Hall. bus: B25, B37, B38, B41, B45, B51, B52, B65, B103.
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Bartow-Pell Mansion Museum 895 Shore Rd, Pelham Bay Park, Bronx hours Sat:Closed Sun:Closed Maximum people: 25 per tour building date: 1836-1842 architect: Attributed to Minard Lafever; grounds restoration, Delano & Aldrich, 1914. This Greek Revival mansion's gracious proportions, refined exterior stonework, cast-iron balconies, and period millwork exemplifies country living in 19th-century Pelham Bay. subway: 6 to Pelham Bay. bus: #45 Westchester Beeline Bus.
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Barzel Iron Works 61 Jefferson St/ Bushwick Ave, Brooklyn neighborhood: Bushwick hours Sat:Closed Sun:Closed Maximum people: 25 per tour building date: 1950 architect: unknown Metal artist Kristina Kozak’s 15,000 sq ft studio is located in a working blacksmithing shop owned by Nat Barzily, and features heavy equipment and several hot forges. subway: J, M, Z to Myrtle Ave/ Bway. bus: B15, B46, B47, B54.
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Bayside Historical Society 208 Totten Ave/ Murray Ave (Fort Totten), Bayside hours Sat:Closed Sun:Closed building date: 1887 architect: Office of the Quartermaster General The Officers' Club at Fort Totten is one of the finest examples of the castellated Gothic Revival style popular in America in the mid 1800s. It is listed in the National Register of Historic Places and is a NYC landmark. subway: 7 to Flushing-Main St to buses. bus: Q13, Q16.
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BBG-BBGM Design Studios/ Empire State Building 350 5th Ave, 25th Fl, New York neighborhood: Murray Hill hours Sat:Closed Sun:Closed Maximum people: 15 per tour building date: 2008 architect: Office renvoation, BBG-BBGM The new offices in the Empire State Building seeks to receive Sliver LEED-certification in the Commercial Interior category, reflecting their commitment to sustainability. The firm's core central interior offices and social spaces divide the 25th-floor by practice, with interior design to one and architecture to the other. subway: B, D, F, N, Q, R, V, W to 34th St/ Herald Sq. bus: M2, M3, M4, M5, Q32.
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BellTel Lofts 365 Bridge St/ Willoughby St, Brooklyn neighborhood: Downtown Brooklyn hours Sat:Closed Sun:Closed building date: 1930 architect: Renovation, Beyer Blinder Belle Architects & Planners, 2008 Built for the New York Telephone Company, this Art Deco building was recently renovated and converted for residential use. The roof terrace provides unobstructed harbor views of the Statue of Liberty, Staten Island and Manhattan. subway: A, C, F to Jay St-Borough Hall, A, C, G to Hoyt-Schermerhorn Sts, B, M, Q, R to DeKalb Ave, M, R to Lawrence St-Metro Tech, 2, 3 to Hoyt St. bus: B25, B26, B38 B37, B41, B45, B51, B52, B54, B57, B61, B65, B67, B75.
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Betances Community Center 465 St. Ann's Avenue, Bronx neighborhood: Mott Haven hours Sat:Closed Sun:Closed building date: 2008 architect: Stephen Yablon Architect PLLC A dramatic light-filled boxing arena forms the centerpiece of the Betances Community Center. Classrooms and game rooms form an interior courtyard that overlooks the luminous three-story boxing gym. An inventive reuse of two existing structures, the center is a beacon for youth in the South Bronx. subway: 2 to 149th St. bus: Bx19.
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Boehm House 75 Arthur Kill Rd/ Richmond Rd, New York neighborhood: Richmondtown hours Sat:Closed Sun:Closed building date: 1750; additions circa 1840 architect: unknown This 1750 house, relocated from Greenridge as a part of historic Richmond Town, exemplifies historical rural New York. Also on view: exhibit invites visitors to participate in detective work needed to restore building. In-progress restoration work highlights display of period tools, the marks they leave and period building methods. bus: From the St. George Ferry Terminal, Staten Island, S74 to Richmond Rd/ St Patrick's Pl; from Brooklyn S79 at 4th Ave and 86th St to Clove Rd/ Targee St. Walk one block to Richmond Rd and transfer to the S74 bus. 
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Broad Street Ballroom 41 Broad St/ Beaver St, New York hours Sat:Closed Sun:Closed Maximum people: 20 per tour building date: 1929 architect: Cross & Cross; restoration, EverGreene Architectural Arts, Inc, 2003-2005 Formerly a bank and once used for the New York Stock Exchange, the building has since undergone an extensive restoration of the banking hall, vault area, executive reception, and conference rooms. subway: J, M, Z to Broad St, R, W to Rector St, 2, 3, 4, 5 to Wall St. bus: M1, M4, M6. other transportation: Staten Island Ferry.
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Brooklyn Bridge Park Pier 1/ Furman & Old Fulton Sts , just south of Fulton Ferry Landing Brooklyn hours Sat:Closed Sun:Closed Reservations required: brooklynbridgepark@empire.state.ny.us Maximum people: 30 per tour building date: Pier 1, winter 2009 architect: Michael Van Valkenburgh Associates This 85-acre park, now under construction, will provide access to Brooklyn's waterfront and spectacular views of the harbor and skyline. subway: A, C to High St, 2, 3 to Clark St. bus: B25. other transportation: Water taxi to Fulton Ferry landing.
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Brooklyn Lyceum 227 4th Ave/ Union St, Brooklyn hours Sat:Closed Sun:Closed Maximum people: 30 per tour building date: 1910 architect: Raymond F. Almirall This former public bathhouse is a creative example of adaptive reuse. Converted to a public gym under NYC planner Robert Moses, it has recently been revitalized as a theater and cafe. subway: R to Union St. bus: B37, B63, B71.
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