A former asylum for the blind, CosmoCaixa is a massive five-floor hands-on museum that lets visitors explore the realms of environment, nature, science and space. Not just for inquiring minds of little ones; it has fascinating and interactive exhibitions for adults alike. Do you want to learn how volcanoes are formed? Or how about looking at the Orion constellation in the planetarium?
Another impressive feature is the 'Bosc Inundat', or the Flooded Forest. You can walk through the environs of an Amazon rainforest where 100 species live, including turtles, alligators and piranhas. Visitors are encouraged to touch, observe, learn but mostly have fun.
Las Arenas Centro Comercial
Located by Plaza de Espanya, this six-story structure is a renovated complex of the old Plaza de Toros, where bullfighting was a public spectacle until 1999 when it was banned.The facade of the arena is preserved, but also boasts an external lift that takes you to the top floor of the rooftop terrace.
Other than shops, there's also a 12-screen cinema, a gymnasium, and several restaurants. There are cinemas in Barcelona that screen movies in English, which is always a great activity on a rainy day. There are also various events such as the recent showing of Bodies: The Exhibition. Another feature is the terrace view on the top of the building. Just grab an umbrella and get a peek - it'll be worth it.
Glories: Els Encants market and DHUB Design Center
Els Encants Vells is an open-air market with a canopy to protect vendors and shoppers from rain or the harsh sun. With both new and second-hand items, Encants is the one of the oldest markets in Europe. The best part of the shopping area is the bottom floor, where youâ€™ll find a spectacle of dealers hawking previously-loved piles of items for dirt cheap. You can get a good find with some haggling, time and patience.
Right next to the market is the new DHUB building, Barcelona's 'reference space to design'. Inside, it houses the Museu del Disseny, a museum of space design, product design, information design, and fashion. The whole museum is set to open December 2014, however, a few exhibitions are open to the public now. The modern interior is also worth a look, as well as its new library.
Museu de Xocolata
Chocolate lovers, this is for you. The Chocolate Museum is a sweet space if you have children and you need to let them blow off some steam (and excite them again by consuming more sugar). But anybody can enjoy looking at the intricate sculptures of chocolate, such as Don Quijote, the dragon from Parc Güell, or even the Sagrada Familia.
You can also witness the history of its cultivation and production of the divine sweet throughout the ages, or even partake in a chocolate-making workshop. After your visit, you can drink hot chocolate at the bar to top off the toothsome experience.
MACBA (Museu d'Art Contemporani de Barcelona)
MACBA's stark white minimalistic building design is a fitting contrast against the surrounding old structures, but also the grayness of a rainy day. Located in Raval, the modern museum holds a permanent collection of art from Catalonia and Spain post-1945. Its oversized glass windows are glazed, and you can catch awesome views of the plaza when ascending the ramps from floor to floor.
Locals know that the list of rainy-day activities doesn't stop there! How else can you enjoy a rainy day in the Mediterranean city of Barcelona? Let us know.