What is south highland avenue?

As an AI language model, I don't have recent information about businesses, events, or any specific details about South Highland Avenue. However, South Highland Avenue is a street located in many cities and towns across the United States. Some of the most popular South Highland Avenues are in Pittsburgh, Pennsylvania, and Los Angeles, California. Both streets are known for their restaurants, cafes, boutiques, and residential areas. Additionally, South Highland Avenue in Pittsburgh is known for its historic landmarks, including the Pittsburgh Athletic Association building and the Shadyside Presbyterian Church.