CosmoCaixa Barcelona is a science museum located in Barcelona, Catalonia, Spain. Formerly known as the Science Museum of Barcelona, it closed for renovations in 1998 and reopened in 2004 under its current name. The museum features a variety of exhibitions, permanent and temporary, that showcase the environment, nature, science, and space. CosmoCaixa also has a planetarium and exhibitions devoted to interaction such as touch and play for small children. It also has a bookstore, gift shop, library, teaching center and cafe. The museum is sponsored by la Caixa—Spanish banking foundation. Entry to the museum is free for students under 16. Adults too can enjoy at the museum with an entry ticket of 6 euros.

The Museum of Natural Sciences of Barcelona is a natural history museum located in Barcelona, Spain.