It is considered the finest work by landscape architect Jens Jensen and was consequently named a National Historic Landmark in 2003.

Jens Jensen was a Danish immigrant who joined the commission in the 1880s as a laborer and rose to the rank of chief landscape artist and general superintendent of the system by 1905.

The park was largely completed by 1920, when Jensen was removed from his position by Illinois Governor Frank Lowden.

The new West Park Commissioners ignored Jensen's plan and instead hired local architectural firm Chatten & Hammond, who completed the structure in 1923.

Inspired by natural rock outcroppings in the Midwest, Jensen's stonework is exemplified by his waterfalls, council ring, and stone paths.