One of the most iconic buildings at Lincoln Park Zoo is the Kover Lion House. It was built in 1912. The architect was Dwight Perkins. The external walls are made of brick ornamented with terra cotta. There are lion mosaics. There is a vaulted ceiling of Guastavino tile. The building is 32,700 square feet. It was rehabbed in 1990, 1997, and 2007. It was named a historic landmark by the city of Chicago in 2005.