The Hartman Rock Garden is a unique outdoor art installation located in Springfield, Ohio. Created by Harry Hartman in the 1930s, it features a variety of miniature structures, sculptures, and landscapes made from rocks, concrete, and found objects. The garden showcases Hartman's creativity and dedication to transforming his yard into a whimsical environment. Visitors can explore the intricate designs, which include replicas of famous landmarks, bridges, and gardens. The site is recognized for its artistic value and historical significance, attracting art enthusiasts and tourists alike. The Hartman Rock Garden is a testament to the power of imagination and resourcefulness in art.