English: [Built in 1895-1896, this Chicago School-style thirteen-story skyscraper was designed by Louis Sullivan and Dankmar Adler for the Guaranty Construction Company. It was initially commissioned by Hascal L. Taylor, whom approached Dankmar Adler to build "the largest and best office building in the city,” but Taylor, whom wanted to name the building after himself, died in 1894, just before the building was announced. Having already had the building designed and ready for construction, the Guaranty Construction Company of Chicago, which already had resources lined up to build the project, bought the property and had the building constructed, with the building instead being named after them. In 1898, the building was renamed after the Prudential Insurance Company, which had refinanced the project and became a major tenant in the building after it was completed. Prudential had the terra cotta panels above the main entrances to the building modified to display the company’s name in 1898, upon their acquisition of a partial share in the ownership of the tower. The building became the tallest building in Buffalo upon its completion, and was a further refinement of the ideas that Sullivan had developed with the Wainwright Building in St. Louis, which was built in 1890-92, and featured a design with more Classical overtones, which were dropped with the design of the Guaranty Building in favor of a more purified Art Nouveau and Chicago School aesthetic, and with more intricate visual detail, with the ornate terra cotta panels cladding the entire structure, leaving very few areas with sparse detail. The building is an early skyscraper with a steel frame supporting the terra cotta panel facade, a departure from earlier load bearing masonry structures that had previously been predominant in many of the same applications, and expresses this through large window openings at the base and a consistent wall thickness, as there was no need to make the exterior walls thicker at the base to support the load from the structure above. The building also contrasts with the more rigid historically-influenced Classical revivalism that was growing in popularity at the time, and follows Sullivan’s mantra of “form ever follows function” despite having a lot of unnecessary detail on the exterior cladding and interior elements. The building’s facade also emphasizes its verticality through continual vertical bands of windows separated by pilasters that are wider on the first two floors, with narrower pilasters above, with the entire composition of the building following the tripartite form influenced by classical columns, with distinct sections comprising the base, shaft, and capital, though being a radical and bold abstraction of the form compared to the historical literalism expressed by most of its contemporaries, more directly displaying the underlying steel structure of the building. ..]