Bald Rock
A massive granite outcropping that sits in the mountains above town. It makes for an excellent morning hike with impressive views from the top.
Feather Falls
A great day hike for those wishing to see the 5th highest falls in the United States with a drop of 200m/640ft. Great spot in the middle of the hike to see a massive ladybug migration.
Lake Oroville
The main attraction of Oroville and a huge destination for boating and fishing. Boats can also be rented from Bidwell Marina and taken far upstream to the forks of the river where there are usually waterfalls depending on the year.
Table Mountain
While this area can be visited year round, it is best seen in the Spring when the large, flat field on the plateau of this mountain are full of endless wildflowers. Additionally, there are excellent waterfalls to hike to and be seen such as Ravine and Phantom Falls. Those interested in preparing can read up on these hikes (http://www.waterfallswest...) as well as read the book, "Wildflowers of Table Mountain" by Mackey & Bills.
Green Line Trail
A contiguous route running from the center of town up to the dam with a number of options along the way. It's for those wishing to make longer bike rides around the area and enjoy the scenery with a very easy to follow green line to mark the path.