El Penol is a large free standing rock in the middle of a picturesque countryside about an hour from Medellin, Colombia. The road to get there is one lane and very curvy so be prepared to get sick if you are prone to that type of thing.
The area has many lakes. Many good typical restaurants in the area. Getting up to the bottom of El Penol is rather easy if you have transportation, although the road is pretty rough but not very long.
The climb to the top of El Peno on the other hand is not that easy, if you are not in shape. There is no elevator so be prepared to walk up very steep stairs carved into the rock itself. This is rather improved from years ago however, when the stairs were built out of wood and attached to the side of the rock, and not all that safe. Once you get to the top the view is spectacular.