Head to the hills! Pass through the Liberty Tubes and go up. Brookline has major hills and valleys and a great Main Street. Worth a visit just for authentic Mexican Food and Produce at Las Palmas (http://www.laspalmaspittsburgh.com).
Need more proof? - https://www.nextpittsburgh.com/features/brookline-neighborhood-pittsburgh/
Brookline History and Info: http://www.brooklineconnection.com
Brookline Data: http://www.city-data.com/neighborhood/Brookline-Pittsburgh-PA.html