Puerto Rico Guest® A Travel & Sports®, Inc. MasterGuide™ to Puerto Rico, © 2008 Select Language English | Español | Deutsch | Francais | Portugues Expert Help | Email this page | 33707 | Packages / Coupons / Auctions | Create Your MasterGuide™ | Advertise Astronomical Observatory, UPR > Puerto Rico > Humacao > Attractions & Sights 787-850-9381 787-850-9336 787-850-9308FX Rt 908 Km 1.4, Barrio Tejas. www1.uprh.edu/observ/ Open house on Thursdays at 7:30pm. This show covers the stars planets and moon (when visible). Reservations required for large groups. A Wednesday morning show (10am-11:30am, only by reservation) covers sunspots. All photos © by their respective owners. Photos may not be reproduced in any form without the owners written permission. Symbol Key: Sponsors, Attractions & Sights.