The New York House of Refuge was the first juvenile reformatory established in the United States. It opened in 1824 on the Bowery in Manhattan, New York City. As the delinquent population grew, separate wings for boys and girls were added and the original rectangular building became U-shaped.
In 1806 the United States Arsenal was erected near the junction of the Bloomingdale and Old Post Roads. It would be several decades before the northern tide of the city would reach this far. The two-story frame building was, according to the General Government "for the purpose of an arsenal and deposit of military stores." When the War of 1812 erupted the Arsenal was converted to a barracks. After the military facility was moved to Castle William,