built at 170, several years later, in a similar style. They were widely imitated elsewhere in the city. The city's industries reached their peak in the 1850s, and the wealth it created explored new architectural trends. The emerging Italianate style began to make its mark, particularly in commercial buildings around Monument Square and along "Bankers' Row", First between State and River. St. Paul's Place was built around 1850 on the south side of State between Fourth and Fifth. Following the dictates of the Washington Park-area deeds, the houses were built with a unified facade as well as a central parapet. The Uri Gilbert Mansion on Second Street west of Washington Park is the most significant detached Italianate home from that era. Russell Sage built a row of Gothic Revival houses on Second Street in 1846 that survives, albeit without some of their original ornamentation. On the edges of town, some architects began exploring that style's Picturesque mode. A new row of townhouses at Washington Park went up, and another Second Street row followed in 1855. The following year, St. John's Episcopal Church, at First and Liberty Streets, was the first use of that style for a city church. During the Civil War, Troy's industries played a key role in supporting the Union cause. The Burden Ironworks is said to have supplied all the Union Army's horseshoes, and another local ironworks supplied the USS Monitors hull plating. Its owners would later produce the first Bessemer process steel in the United States after the war. In 1862 Troy suffered another major fire, the worst in its history. A locomotive's spark ignited the wooden Green Island drawbridge that existed at the time, and when that could not be contained to the bridge it spread to the east, ultimately devastating 507 buildings over a 16-block area. As before, the city rebuilt quickly, with the area along Fifth between Broadway and Grant Street, where Cummings built a row of houses between Fifth and Sixth, most strongly reflecting this era of rapid construction and reconstruction. The Gurley Building, too, rose in just eight months from the ashes of its predecessor. The nearby neighborhood also became desirable, with many local businessmen moving into newly built homes along Fifth. Postwar prosperity As the postwar years yielded to the Gilded Age, Troy's prosperity continued. The wealth created by its industries built some of the city's most notable Victorian buildings.