I've been going to the Park of Roses ever since I have been a small child. My grandmother took me there often, and when she passed away, we put a memorial stone in her honor there.
Recently, my older sister got married at this park. It's beautiful and peaceful, with every kind of variety of roses that you could imagine (and some you couldn't) in bloom during the spring and summer.
There's a gazebo for the performing arts, and a tall iron tower you can climb to look over the whole park.
I have a lot of sentimental memories of this place, and I'm sure you can make your own memories there if you give it a try.
There are many things that go on during the year at the park, including jazz groups, and a big festival held on the 4th of July (with all the vendors that the holiday entails). My favorite park in the city!