On my way from Tikal in the north-east of Guatemala to Guatemala City in the oposite corner of Guatemala, I made a stop in a place called Coban, from where you can do a day trip to Semac Champey.
I was told by some other travellers about this place and it really was a very special place... look for yourself!

A series of natural pools (over the actual river, that flows underneath it!), here seen from a viewpoint up on the hill:


And then up close:






What a beautiful place to enjoy, relax and swim!