Sunny Jim Cave is a the only cave in La Jolla that is reachable by land. Named by L. Frank Baum of Wizard of Oz fame, Sunny Jim was a cartoon cereal box mascot in the 1920s. Entrance to the cave is through the gift shop, and all kids get a cute plastic sea creature. For a nominal fee, you can enter the man-made tunnel and descend down 145 steps to a cool, scenic view at the bottom. When you’re done, leave the gift shop, turn right, and walk the bluffs to the lookout point for some spectacular ocean views. Source: redtri.com
If you are heading from Arenal/La Fortuna to Monteverde, you can take boat taxis across the lake. This is a faster alternative to circumnavigating the lake on land.
After visiting the Baikal Museum, walk up behind it and head towards the Baikal Hotel. About 500 feet before the hotel, take the road to the left to get to the gondola. At the top of the mountain is a view that is indescribably beautiful!