The infinity symbol in this photograph is a very unique "timepiece"...it's actually a sun dial...an analemmatic sundial. I won't get into a scientific explanation of how this works but you can read more about it here. And every sundial needs a gnomon...a triangular plate or pin to cast a shadow on the time and in this sundial YOU are that pin. The shadow is cast by the human body to measure the time.
(The clock is located on a beautiful sandy beach in British Columbia's Okanagan Valley.)