Barcelona is a city of layers. It still bears evidence of its various historical periods, from Roman occupation to medieval splendor, 20th-century artistic renaissance to Olympic resurgence in the 90s. As a result, the city is uniquely worldly and dynamic. As much as there is to see, however, also leave ample time for wandering.
Read my curated guide for a few ideas for what to see and do, plus where to eat and stay in Barcelona.