Fort Jay Magazine is a traditional star-shaped fort defense structure and the oldest structure on Governors Island.

From Manhattan
Ferry:
Battery Maritime Building (northeast of Staten Island Ferry Terminal)
10 South Street
New York, NY 10005

Subways:
South Ferry Loop (1)
Whitehall Street (R)
Broad Street (J/Z)

Buses:
South Street/Whitehall Street (M15)

From Brooklyn
Ferry:
Pier 6
Brooklyn Bridge Park
Brooklyn, NY
11201

Subways:
High Street (A/C)
York Street (F)
Clark Street (2/3)
Court Street (R)
Borough Hall (2/3/4/5)

Buses:
Fulton Ferry Landing (B25)
Loop Road on Pier 6 (B63)
Atlantic Avenue/Hicks Street (B61)
Jay St/York St (B67)