Lake Biwa, Shiga. I dropped by this place the other day with some friends. This is my first visit even though it's just around the corner. This place turns out to be a very relaxing spot, maybe perfect for yoga, fishing, BBQ (discussions did take place) etc. According to Wikipedia (2008), it's the largest freshwater lake in Japan and provides drinking water for about 15 million people in the region. Probably I been drinking water that comes from this lake for so long and only knew about it 5 min ago!