Beach PHOTO CREDIT: Tom Simpson Keansburg Beaches Families have been enjoying the scenic beaches of Keansburg Amusement Park for over 100 years. Not only are our beaches FREE, but offer a beautiful summer breeze while overlooking the skyline of lower Manhattan. – Beaches have NO lifeguards. Swim at your own risk. -Beach fires and grilling are strictly prohibited. Police will be called and fines will assessed for violations. – Garbage cans are provided. Please help us to keep YOUR beach clean.