In the landlocked Rockies, the chance to swim somewhere other than a frigid mountain lake or to enjoy the sound of water near one’s home is especially welcome. Add in the opportunity to go beyond the traditional pool design or garden fountain, and the pleasure gets kicked up a notch, or three. This trio of water features—two pools and one pond—stand out for the feats of engineering and technological prowess required to create them, and for their seamless integration of the raw and the refined.