It was the spirit animating the mass and flowing from it, and it expressed the individuality of the building.

Sullivan's only building in New York with a glazed terra cotta curtain wall expressing the steel structure behind it. Preservation
During the postwar era of urban renewal Sullivan's works fell into disfavor and many were demoliLouis Sullivand. Temple later known as the Pilgrim Baptist Church) Chicago (1890–1891)
James Charnley House (also known as the Charnley–Persky House Museum Foundation and the National Headquarters of the Society of Architectural Historians) Chicago (1891–1892)
Albert Sullivan Residence Chicago (1891–1892)
Transportation Building World's Columbian Exposition Chicago (1891–1893)
McVicker's Theater second remodeling Chicago (1890–1891)
Bayard Building (now Bayard-Condict Building) 65–69 Bleecker Street New York City (1898).

Louis Henry Sullivan (September 3 1856 – April 14 1924) was an American architect and has been called the "father of skyscrapers" and "father of modernism". He is considered by many as the creator of the modern skyscraper was an influential architect and critic of the Chicago School was a mentor to Frank Lloyd Wright and an inspiration to the Chicago group of architects who have come to be known as the Prairie School.