2,3 to Wall Street, walk south on William Street for 3 blocks
4,5 to Bowling Green and walk North on Water Street for 4 blocks
1 to South Ferry, walk North on South Street for 2 blocks. Be sure to be in the first 5 cars.
R/W to Whitehall St., walk north on Water Street for 2 blocks, turn right on Old Slip.
"The New York City Police Museum is dedicated to preserving the history of the New York City Police Department, the world's largest and most famous police department."
The New York Police Museum is across the street from the famous stock market bull statue in the old Cunard Line building and just up the street from the National Museum of the American Indian. It's a bit larger than it's counterpart, the New York Fire Museum, but it has the same type of exhibits.
Most of the material on display is memorabilia showing that development of police work over time; uniforms, badges, medals, motorcycles and a squad car. The museum also gives information about the structure and function of the contemporary police force; what the Transit and Housing and numerous other divisions are and what they do. The museum also has an interesting exhibit about modern forensic science. A visit to the Police Museum should only take half an hour to an hour and is interesting mainly as a curiosity stop if you're in the area.