Planetarium
Arecibo Observatory
184 locals recommend,
Location
Puerto Rico 625
Arecibo, Arecibo
Tips from locals
The largest Radio Observatory in the World. First place sending signals to aliens. Great place to visit. It’s a must! One day trip.
This is the largest radio telescope in the entire world, right in our backyard. It's in a remote location in Arecibo, but worth an afternoon visit. It's a once in a lifetime experience and you will learn alot about the work and all the data that is collected there.