Laguna Verde

Laguna Verde, described by Lonely Planet as having the colour of liquid kryptonite.  Certainly an unbelievably spectacular turquoise on my first visit, but changes colour depending on environmental conditions - I've also seen it brown.  Tends to be very windy and quite cold, so be prepared.  There's a couple of small thermal pool on the southern shore of the lack, although last time I went past, there were half a dozen naked men sitting in it, so beware...  The surroundings are stunningly beautiful!