The Oklahoma State Capitol is the house of government of the U.S. state of Oklahoma. It is the building that houses the Oklahoma Legislature and executive branch offices. It is located along Lincoln Boulevard in Oklahoma City. The present structure includes a dome completed in 2002. The building is a National Historic Landmark.Oklahoma's first capital was Guthrie, Oklahoma, but it moved to Oklahoma City in 1910. Construction began on the Oklahoma State Capitol in 1914 and was completed in 1917.