The museum's building and renovation project, "Building for the Future", began in 2005 and was originally targeted for completion in 2012 (though it was not completed until 2013) at projected costs of $258 million. The museum celebrated the official completion of the renovation and expansion project with a grand opening celebration held on December 31, 2013, and additional activities that continued through the first week of 2014. The $350 million project—two-thirds of which was earmarked for the complete renovation of the original 1916 structure—added two new wings, and was the largest cultural project in Ohio's history. The new east and west wings, as well as the enclosing of the atrium courtyard under a soaring glass canopy, have brought the museum's total floor space to (an increase of approximately 65%).