The San Marcos is an excellent size for confined backyards or as a pool sized for those who just wish to get wet! The 4′ depth is just right for water aerobics. The bench seat surrounds the entire pool perimeter and can have hydro therapy jets installed to make the San Marcos one of the biggest spas in the world! The San Marcos can also be an above the ground installation! Ask American Fiberglass Pools about the details for a "permanent" above ground pool.