At Collier County's main museum, you'll discover mastodons, saber cats and other prehistoric animals, learn about Calusa and Seminole Indians and meet the frontier families and trailblazers whose lives and dreams shaped the early history. Located just two miles from downtown Naples in the Collier County Government Center. Open Monday-Friday 9 a.m. to 5 p.m. and Saturday 9 a.m. to 4 p.m.