Alva is an unincorporated community and census-designated place (CDP) in the northeast corner of Lee County, Florida. Situated on the Caloosahatchee River, the town got its name from the Alva Flower (sabatia brevifolia rafinesque).
The Private Alva Book Club planted roots for the Alva Library, the first public library in southwest Florida. It dates back to 1909 and is also home to a chapel that opened in 1901. The Alva Library was the first library in what is today Lee County. In 1974, the Alva Garden Club turned the building into a museum with the Library Association trustees' permission. The library and chapel are both open to the public and are home to the nonprofit museum.