Learn about Seacliff State Beach’s fascinating history on this 1-mile, 1-hour stroll to the Aptos Creek Bridge and back. Get the lowdown on the Concrete Ship, the development of Aptos, “The Madman of Seacliff,” and much, much more. Bring water and layered clothing. Pre-registration required at www.santacruzstateparks.as.me.\ \ Meet at the shaded picnic tables next to the visitor center. Free event. Vehicle day-use fee is $10. For more information, call (831) 685-6444.