Two miles south of Lucia, this park gets its name from the four remaining wood-fired kilns originally built here in the 1880s to smelt quarried limestone into powder, a key ingredient in cement building construction from Monterey to San Francisco. Tragically, pioneers chopped down most of the steep canyon’s old-growth redwoods to fuel the kilns’ fires. A one-mile round-trip trail leads through a redwood grove to the historic site, passing a creekside spur trail to a delightful 100ft-high waterfall.