One of my favorite places in Bend is Drake Park. It is situated in the center of town. Maybe one of the reasons I like it so much is that it was one of the first places I visited when I first came to Bend and the beauty just took my breath away.
In the summer they have free concerts in the park along with many other events. In the winter, you will find kids out sliding on a small hill . . . when there is snow.
The Deschutes River runs along the park and in the summer you will always find kayakers and people floating in inner tubes trying to get some relief from the heat.
I love the views in the winter when the mountains are covered with snow.