Barcelona is a reasonably major metropolis. You are able to wander to most of the main sights. But, in the event you’re in Barcelona for three days, you’ll eventually end up needing transport. Go ahead and take metro or taxis. As a UNESCO Earth Heritage-awarded functionality in 2010, flamenco at https://www.triptales.me/unlock-barcelonas-hidden-treasures-secret-spots-you-cant-miss/