Barcelona is known for its hot summers, which is why it’s important to find child-friendly indoor options to escape the heat. Between 11am and 3pm, the sun reaches its peak, making it difficult for children to enjoy outdoor playtime without risking sunburn or heat exhaustion. That’s why I am constantly searching for indoor activities that the whole family can enjoy.
One great option that I found is the CosmoCaixa Science Museum in Sant Gervasi. This museum takes visitors on a journey through the natural world and beyond, exploring rainforests, flooded forests and travelling through space and time at the planetarium. It’s an enjoyable experience for both young and old, and there are many interactive workshops, activities, games, and experiments that children can participate in.
The museum offers a wide range of activities that change throughout the year, so there is always something new to discover. From guided tours to hands-on experiments, the CosmoCaixa Science Museum is a great place to spend a day with the family.
Not only is this museum a great option for escaping the heat, but it’s also an educational experience for children. They can learn about science, nature, and space in a fun and interactive way. Plus, the museum is located in a beautiful and historic building, making it a great place to explore and learn about the city’s culture and history.
Overall, the CosmoCaixa Science Museum is a must-visit for families looking for a fun and educational indoor activity in Barcelona.

I recommend having a look at their website before you go to check on interesting kids’ activities that are offered and to buy tickets in advance.
Here is the address:
Isaac Newton, 26
08022 Barcelona
Tel. 93 212 60 50
Website: cosmocaixa.org/es/
Opening hours: From Tuesday-Sunday, 10am – 8pm