Jupiter Inlet Light, completed in 1860 in Jupiter, Florida, was built at a strategically important site where the Indian River meets the inlet, a place long used by Indigenous peoples and later valued by U.S. surveyors. Designed by Lieutenant George G. Meade and strengthened by Lieutenant William Raynolds’s double-wall masonry plan, it overcame supply problems and delays during the Third Seminole War. Set on a high sand dune, its light reached 24 nautical miles. The station later became a Weather Bureau, signal, naval wireless, and wartime communications center, including Station J, which helped locate German U-boats. Today it is preserved for its navigational, military, ecological, and cultural significance.