Based on Newton Street in central Manchester, this unassuming building holds some incredible material for serious researchers, as well as an awesome array of guns, knives, bats and even a mace confiscated from enthusiastic criminals.
Librarian Duncan Brodie tells us about the Salford Aliens records - a world-class collection of discovered in the bowels of a Salford police station in 1999.
The original Victorian cells would have held up to 12 men each as they awaited their fate - and all are open to visitors to pore over and enjoy. Just don't forget to ask for the key before you enter...
This first video only scratches the surface of the treasures you can find within, and we'll be going back to the museum to uncover more fine detail in the near future.
The Greater Manchester Police Museum is open to the public every Tuesday from 10.30am � 3.30pm as well as Thursdays at the same times during the school holidays.
Archive appointments can be made on Mondays, Wednesdays, Thursdays (during term-time) and Fridays.
Find out more at the Greater Manchester Police Museum website.
This article appeared on SalfordOnline on the 9th of April 2014, it is republished here with the permission of Officer of the Lore, Mr Tony Flynn.