The Fuji Five Lakes are located at the base of Mount Fuji and weather permitting, offer fabulous views of Mount Fuji. When I went it was really cloudy and I could not see Mount Fuji from the lakes, the area is still nice enough to find other things to take photos of. The photo below is taken from Itchiku Kubota’s Kimono Museum which is close to Kawaguchiko (the biggest of the lakes). Besides having beautiful kimonos the landscape and design of the museum is just amazingly beautiful, especially in the fall.
If you want to climb Mount Fuji, it is not a bad idea to stay here the day before as Fuji Five Lakes (Fujigoko) is a good place to start the climb. Also camping, hiking and fishing are other popular outdoor activities here. If you can, fall or cherry blossom season is the best time to visit the five lakes, but if you want to climb Mount fuji, the climbing season is from June-August.
For more information, please see the Japan-Guide.com.