La Rambla is the most popular and spectacular street in Barcelona.It is approximately 1.2 kilometres long with Port Vell at the Southernmost end and Plaça de Catalunya at the Northernmost end. You cannot find another place in the whole city with so much stuff going on. Everything you need to see, visit and explore from little gift and art shops, street performers (including human statues), cafes, restaurants (have in mind all the places are a little bit too pricey, considering the location) to La Boqueria Food market. Go to La Boqueria and try at least few foods you have never tried before, the food market is an excellent place for quick experiments with flavors and tastes.