The RSA Battle House Tower is located in Mobile, Alabama and is Alabama's tallest building. The building is owned by the Retirement Systems of Alabama (RSA). It is the tallest on the Gulf Coast of the United States outside of Houston. It replaces the Wells Fargo Tower in Birmingham as the tallest building in Alabama and the RSA–BankTrust Building as the tallest in Mobile. The building is named for the neighboring Battle House Hotel, which is now part of the tower complex.