It's not architecture, but Henry Cowell Redwood State Park in Felton, California brings grand inspiration for nature's influence on mankind's constructs. This small area grows enormous redwood trees because of its distinctive geological location, and contains some of the last great redwoods in the world. It only became a park in 1930. The ancient atmosphere and intricate systems are deeply profound.
[all images copyrighted Benjamin Blankenbehler 2010]