In 2006, the second addition to the Mansion was completed, a new library for the Governor Jeb Bush and his wife, Columba Bush. The Cabinet approved the $500,000 expansion in August 2005. The building celebrated its 50th anniversary in 2005, as well as being added to the National Register of Historic Places. In 2007, Governor Charlie Crist announced the addition of a solar-powered swimming pool and a hydrogen fuel cell at the mansion. The mansion now includes a greenhouse and the Manatee Sculpture Garden, and is next to a private park.