Anheuser-Busch Brewery is a brewery complex in St. Louis, Missouri. It was opened in 1852 by German immigrant Adolphus Busch. It a National Historic Landmark District. The Lyon Schoolhouse Museum is on the grounds at the Anheuser-Busch Brewery. It is considered to be one of oldest school buildings in St Louis. It served as the head offices of the brewery after 1907. The museum contains rare mementos gathered from the founding of the company to current day, including pictures of the brewery and its expansion over the years. The 142 acres (57 ha) property includes 189 buildings. Some of the most striking are red brick Romanesque architecture with crenelated towers and elaborate ornamentation.