While South High School is not technically in the actual park, it is a historic gem that was constructed in 1925 and is host to many Champion Trees that are featured in our Washington Park Tree Guide.
South High was accepted on the National Register of Historic Places during a ceremony for that was held April 24, 2023.
South High School Alumni and Friends is an excellent resource on this topic.
There is a wealth of information about the history, architecture and interior of the school from the National Register of Historic Places Registration Submission Form which was provided to us from the Alumni and Friends organization. It contains dozens of beautiful photos a small sample is visible below: