Tower RV Storage - Ontario offers storage for RVs, boats and autos in Ontario, CA. The parking spaces at our facility range in size from 5X5 to 15X60. No matter the size of your vehicle: if it has wheels, we can store it. At Tower RV Storage, we offer more than just parking spaces for your vehicles; we also sell peace of mind. Tower RV Storage is a highly monitored and completely fenced facility designed to keep your recreational vehicle safe and secure.