Martha Stewart on Instagram: "My pool in East Hampton is the place to be on a 89 degree day! When I built the pool thirty years ago it was designed to be as chlorine free as possible, with a natural concrete finish-no paint- and it fit in a long narrow space between the house and the property line. I made it extra deep for diving and with no protruding steps so we could really race the length without worrying about obstacles. After all these years, It is a fun place to swim!!!" | Zootzle