5. Clermont Avenue Armory, 23rd Regiment, Brooklyn

Year Built: 1872-1873

Where: 165-179 Clermont Avenue

The Clermont Armory was converted into an apartment building, though it leaves the building virtually unrecognizable. On this page, you can see the armory as it was before. It appears that only parts of the facade have been retained – including the semicircular opening and the entrance.