Reach for the stars at the 16th-century Blackrock castle, a former watchtower now combined with an award-winning observatory. The site appeals to budding astronomers and scientists as well as adults and children of all ages, with workshops and educational events throughout the year. The imposing building overlooks the River Lee on the outskirts of the city harbour. While visitors might not be able to afford the current price tag for a trip to the moon, they can send a message into space from here. There are also daily tours of the castle dungeon and turret.
