Puerto Rico Guest® A Travel & Sports®, Inc. MasterGuide™ to Puerto Rico, © 2008 Select Language English | Español | Deutsch | Francais | Portugues Expert Help | Email this page | 34844 | Packages / Coupons / Auctions | Create Your MasterGuide™ | Advertise Central Guánica Ruins > Puerto Rico > Guánica > Attractions & Sights 787-821-4343 787-821-0092FX 787-821-1358FX Rt 325 toward Playa Santa. Ruins of a sugar mill once owned by the South Porto Rico Sugar Company. At one point it was the largest sugar mill in Puerto Rico, and included their own railroad, medical facilities, stores and school. All photos © by their respective owners. Photos may not be reproduced in any form without the owners written permission. Symbol Key: Sponsors, Attractions & Sights.