New Orleans' City Park is a huge, fully equipped, public park in the heart of city. The park is bordered on two sides by tributaries from lake Pontchartrain, and dangerously close to what looks like a ridiculously simple earthen dam (I was told the earthen dam was actually a levee - no wonder they broke).
After Katrina, City Park and the surrounding area was under several feet of water. All considered I thought the park was in remarkable shape, although parts are still under construction. The towering live oaks were especially beautiful.
Here are a few pics of time spent on the playground. With yards small and often shared, it must be a draw for kids miles around - it was for mine. My kids were determined to play on the equipment, even though it was intolerably hot (coming from a Floridian - thats hot).