The Villa is the oldest part of the Museum Koenig and houses the vertebrate department. The building was built in 1860. Leopold Koenig, father of Alexander Koenig purchased the building in 1873. He donated the house to his son in 1884 after Alexander Koenig received his doctoral degree and married Margarethe Westphal. Alexander Koenig used the Villa as his private residence and to house his bird collections. The building was largely destroyed in World War II and rebuild in a simplified manner in 1949.