• Planetarium is open again, with its own tickets (book through the museum's ticket site)
• Under-14s need an adult, and teens 14 to 17 may be asked for ID
• Monthly activity agenda of workshops and talks, some with their own ticket

Spain's national science and technology museum. In the round Gabinete hall, 19th-century lab instruments sit next to more than 90 hands-on modules where kids test sound, light, magnetism, and motion. The Patrimonio hall runs from early microscopes and zoetropes to old TVs and phones, the first bicycles, cars, and motorcycles.