Arecibo Observatory Tours and Tickets

Explore two of Puerto Rico's most massive landmarks as you spend 9.5 hours visiting the impressive Cueva Ventana and the world-famous Arecibo Observatory. Window Cave, as it is also known, is a network of caves atop a limestone cliff once only accessible to locals. Admire the elaborate stalactite and stalagmite formations, discover impressive fauna of the caves that eventually lead to panoramic views across the Rio Grande de Arecibo Valley. Then visit the world's largest radio telescope at Arecibo, a 20-acre (8-hectare) dish used to observe the universe, exploring a range of natural attractions and scientific exhibits on site. Your trip also includes entrance fees, bottled water and round-trip hotel transport.

This full-day tour allows you to explore Arecibo Observatory, and relax on a black magnetic sand beach. Skip the hassle of renting a car to explore these landmarks and highlights, including Cueva del Indio, with convenient pickup and drop-off at your San Juan hotel.

Get an insider's look at two of Puerto Rico's most massive attractions, the Arecibo Observatory and Rio Camuy Caves Park, on this 9-hour day trip from San Juan. Descend inside a million-year-old cavern (one of the three largest underground river systems in the world) on your Camuy cave tour. Then prepare for an out-of-this-world visit to the world's largest radio telescope at Arecibo, a giant concrete bowl wedged in the hills of Puerto Rico's northern coast. Your tour also includes a guide and pickup and drop-off at most San Juan hotels.