sentences:  The dike and earliest armory buildings were completed in 1855, and Colt's mansion Armsmear was constructed the following year on a hill overlooking the armory.Shortly afterwards Colt added 20 six/eight-family houses (10 of which survive) on Huyshope and Van Block Avenues for skilled workers.Colt's 1855 East Armory was almost totally destroyed by a disastrous fire in 1864; only two small outbuildings remain of this original construction (the Forge and the Foundry).