"Liberty Memorial and BMA Building, Kansas City, Missouri" by Catherine Sherman. Two historic structures -- The Liberty Memorial and the former BMA building -- stand above Penn Valley Park in Kansas City, Missouri, at sunset. The Liberty Memorial is a memorial in Kansas City, Missouri, to the soldiers who died in World War I. Groundbreaking began on November 1, 1921, and the memorial was completed and dedicated on November 11, 1926. The Liberty Memorial, which is in Penn Valley Park, houses the official World War I museum of the United States, which opened to the public in December 2006. The building is designed in Beaux Arts Classicism and Egyptian Revival style of architecture with a limestone exterior. The Liberty Memorial is a National Historic Landmark and on the National Register of Historic Places. The BMA (Business Men's Assurance) Tower in Kansas City, Missouri, also known as One Park Place, was built as a 19-story Modern style office building. Located on a prominent height 3 miles (4.8 km) south of downtown Kansas City, the 280 feet (85 m) building is very visible in its location at the southern edge of Penn Valley Park. The building was sold by the BMA in 2002 and was added to the National Register of Historic Places the same year. The BMA Building won an Architectural Award of Excellence from the American Institute of Steel Construction and a First Honor Award from the American Institute of Architects.