The Sunken Gardens are 4 acres of well-established botanical gardens, located in the Historic Old Northeast neighborhood of St. Petersburg, Florida, at 1825 4th Street North. The Gardens have existed for more than a century, and are one of the oldest roadside tourist attractions in the United States. Florida Yoga Teachers Association and other Yoga studios attend the Yoga Fest each year. It’s a great place to meditate, do yoga and enjoy the natural beauty all around.