San Diego, California
Cabrillo National Monument commemorates the landing of Juan Rodriguez Cabrillo at San Diego Bay in 1542, marking the first arrival of a European expedition on the West Coast. The monument offers sweeping views of the city's skyline, the naval base, and the Pacific Ocean, making it a popular spot for whale watching during migration season. Visitors can explore exhibits on the age of exploration, hike the Bayside Trail, and visit the historic lighthouse.