tons of stone. The theater offered some of the most well known entertainers of the day. Columbia Hall was purchased in the 1930s and torn down in 1938 to use the stone elsewhere. The foundation is all that remains. The Green Mansion was built in 1882 on a hill overlooking the city. The mansion had twenty rooms, seven Italian marble fireplaces, hand-painted murals, two baths, and a conservatory. In the early 1930s the Green family sold the estate to Frank Nissen. The Green mansion became the summer home of poet Paul Engle, son-in-law of Frank Nissen. In 1963 the Green Mansion was damaged by fire and torn down in the 1990s. The Stone Barn was built in 1889 by John A. Green. The barn is and stands high. There are a series of six buttresses along the length of the barn, each wide at the base. The barn was originally built to house draft horses for John Green's quarry business. The stables could hold up to 100 horses. The barn housed a blacksmith shop, a three-story loft, and housing quarters for stable attendants. Locals of Stone City say that it took 80 men 80 days to build the stone barn. Today the barn is a private home and welcome refuge for visitors to Stone City. The Water Tower was built on a high point of the Green Estate. The tower served as the water source for the estate, which included John Green's limestone quarry business. In the summer of 1932, during Stone City Art Colony, the water tower was used as an apartment for art instructor Adrian Dornbush. Students at the colony referred to the water tower as Adrian's Tomb. In 2008 the water tower was purchased, remodeled, and made into a gift shop. See also National Register of Historic Places listings in Jones County, Iowa References External links Stone City Foundation Houses in Jones County, Iowa Farms on the National Register of Historic Places in Iowa Limestone buildings in the United States Stone houses in the United States National Register of Historic Places in Jones County, Iowa Historic districts on the National Register of Historic Places in Iowa Historic districts in Jones County, Iowa Individually listed contributing properties to historic districts on the National Register in Iowa