Hall) in Paris, France. The Chazy limestone for its construction was quarried at the Clark Quarry in Essex County, New York. The central open court is dominated by a shaft intended to support a massive dome. The dome and tower were never completed, as it was found the building's weight was causing stress fractures and making the building shift downhill toward State Street. To stop this movement, a large, long exterior Eastern Staircase was added to support the front facade. The Capitol exterior is made of white granite from Hallowell, Maine, and the building incorporates Westchester marble cut by state prisoners at Sing Sing. The granite structure is 220 feet (67 m) tall at its highest point, and it is one of eleven U.S. state capitols that does not have a domed roof. Tunnels connect it to the Empire State Plaza and Alfred E. Smith Building. The building's exterior underwent restoration from 2000 until fall 2014. The Assembly Chamber was built with the world's largest open arched span. However, this produced very inconvenient acoustic results. A more serious problem was the structure's shifting foundations that made the vaults unstable. A lower false ceiling was introduced to prevent rock shards from the vaults from falling to the assembly floor. The Capitol initially featured two large murals by Boston artist William Morris Hunt painted directly on to the Assembly Chamber's sandstone walls. The two enormous works, named The Flight of Night and The Discoverer, each some 45-feet long, were later covered when the Assembly's vaulted ceiling proved unstable and the ceiling was lowered four feet below the murals. Earlier, the murals had been damaged by moisture in the building and had begun to flake. Plans for later murals by Hunt were abandoned due to lack of funding, and some people have speculated the resulting depression experienced by the artist may have contributed to his suicide. The ceiling murals of battle scenes in the Governor's Reception Room are the work of William de Leftwich Dodge. In front of the Capitol is an equestrian sculpture of Civil War General Philip Sheridan, designed by John Quincy Adams Ward and Daniel Chester French and completed in 1916. 1911 fire In the early morning hours of March 29, 1911, four days after the Triangle Shirtwaist Factory fire in Manhattan killed 165 garment workers, a disaster that led to the state being the first to establish a state