The Gibson Guitar Corporation, formerly of Kalamazoo, Michigan and currently of Nashville, Tennessee, manufactures guitars and other instruments which sell under a variety of brand names. With a history of over a century, Gibson has been one of the companies that have revolutionized the development of the acoustic and the electric guitar, and along the way have built one of the world's most iconic guitars, the Gibson Les Paul. Many of their instruments continue to increase in value, and some Gibsons are among the most collectible guitars.