The Barceloneta area in Barcelona can be quite touristy, but a stroll around the neighborhood makes for some great people watching. Views of the water and surrounding hills are great. If you're not afraid of heights pay a few euros for a trip up the Columbus Monument for some excellent photo ops. Or a few more euros for a trip up to Montjuic on the aeri cable cars. Beware of uber touristy restaurants by doing some research ahead of time on where to eat.