English: Built in 1894 and expanded in 1912-1913, this complex of Queen Anne and Arts and Crafts-style buildings was formerly home to Tree Studio, an artist colony founded by Judge Lambert Tree, and his wife, Anne Tree, and were designed by Parfitt Brothers, and the firm of Hill and Woltersdorf. The buildings wrap a courtyard to the rear of the Medinah Temple, on land that was donated by the Tree family, with the original building being located on the west side of the complex along State Street, and two annexes to the east along Ohio Street and Ontario Street at the north and south edges of the site. The complex housed artists and artist studios under a legal trust set up by the Tree family until 1959, when the complex was sold to the adjacent Medinah Temple, which occupied the building at the east end of the block. The original building, designed by Parfitt Brothers, is a Queen Anne-style structure built in 1894, and features a buff roman brick exterior, hipped roof with gables at the corners and a bonnet roof obscuring a low-slope roof along the State Street facade, hipped wall dormers, decorative spandrel panels between the second and third floor windows, one-over-one windows with transoms, stone trim, cast iron fluted composite pilasters, curved cast iron relief panels, and a cast iron cornice at the retail shopfronts along State Street, which originally provided rental income to support the artists living and working above, entrance doors to the upper floors on the Ohio Street and Ontario Street facades, with arched transoms, sidelights, and decorative limestone trim surrounds above the arched transoms, which features carved reliefs and is emblazoned with the words “Studio Building”, a decorative architrave with sculptural reliefs and pediments on the State Street facade, and multiple rooftop sawtooth clerestory windows on the low-slope roof of the building. The rear annexes were building in 1912 along Ohio Street and 1913 along Ontario Street, and were designed in the Arts and Crafts style by Hill and Woltersdorf. The annexes are clad in dark red brick with mansard roofs, brown terra cotta trim, decorative brackets and vaulted wall dormers with curved parapets and decorative reliefs, large windows, stone bases, and terra cotta cornices. Between the buildings of the Tree Studio complex and the adjacent Medinah Temple is a courtyard in the middle of the block, which was created in 1912 with the completion of the annex buildings and Medinah Temple. The courtyard has a park-like atmosphere with plantings and walkways, along with a vine-covered wall on the rear of the Medinah Temple. The buildings were listed on the National Register of Historic Places in 1974, and were designated Chicago Landmarks in 1997 and 2001. The landmarking of the complex came about due to concerns raised by residents around the turn of the millennium that the buildings were endangered by development pressure and had no protection to prevent them from being replaced by a high-rise tower, leading to the buildings being placed on the 2000 World Monuments Watch, with the World Monuments Fund sponsoring an architectural surveyor the complex and feasibility study of rehabilitating the buildings to adapt them to new uses. In 2001, the buildings were purchased and rehabilitated, restoring the exteriors of the buildings and updating building systems to house new commercial tenants, today housing both offices and retail space.