Gage Park is a quiet residential neighborhood. The most prominent thing to do while in this neighborhood is to visit one of the many Tamale restaurants. Be sure to try Tamales Rosa or Manolo's Tamales.
If you are not in the mood for tamales then visit Nicky's The Real McCoy. They have great BBQ ribs and Grecian Chicken.
There is also Gage Park - which is 69 acres of green space - there are beautiful murals, an auditorium, swimming pool, soccer field and basketball courts.
Also be sure to visit An Orange Moon. This is a great consignment shop, art gallery and antique store all rolled into one.