June 16, 2018 Saturday, 10:30 am to 2:30 pm - Flag Day - Join us at the Lighthouse for Family Fun Activities. Explore our historical exhibits and climb the tallest lighthouse in Florida. Learn about Semaphore history and how Semaphore flags were used to communicate important messages to boats at sea. Make your own flag or lighthouse pennant that's yours to keep. Journey back over 100 years ago, when the keepers and their families lived at the lighthouse. All activities are included with regular admission, no advance reservations required.