The Sunken Gardens are 4 acres (1.6 hectares) 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. The Gardens are now operated by the City of St. Petersburg, FL and maintained with the help of volunteers. Sunken Gardens are open to the public every day of the week.