See all the highlights of Barcelona in comfort aboard a double-decker bus. Hop-on and hop-off as many times as you wish during 24 or 48 hours (depending on the option selected) and enjoy the city at your own pace. There are 2 routes and your ticket is valid for both. Frequency of buses at stops varies depending on the season (between 5 and 30 minutes) and each route takes approximately 2 hours. Your tickets also includes entrance to the Aquarium of Barcelona. The aquarium is the largest Mediterranean-themed aquarium in the world. Discover its fascinating species and immerse yourself in the Mediterranean’s different marine communities. Learn about the most characteristic traits of the species living in each aquarium. Observe two habitats inspired by protected areas on Spain’s coastline: the Ebro Delta and the Medes Islands. Finally, take a walk through the acrylic tunnel that runs the length of the Oceanarium, which gives you the feeling of swimming with sharks. Hop-on, Hop-off Bus Routes & Stops West Route (orange): Plaça Catalunya, Arc de Triomf, El Born-Ciutadella-Zoo, Passeig Colom, World Trade Center, Jardins de Miramar, Fundació Joan Miró, Anella Olímpica, MNAC Museo Nacional de Catalunya, Poble Espanyol, Caixa Fòrum-Pavelló Mies Van Der Rohe, Plaça d’Espanya, Estació de Sants, Camp Nou (FC Barcelona), Plaça Pius XII-Palau Reial-Pavellons Guell-Monestir de Pedralbes, Illa Diagonal, Av. Diagonal, La Pedrera, Casa Batlló. East Route (green): Plaça Catalunya, Port Vell, Museu d’Història de Catalunya, Barceloneta, Port Olímpic, Poble Nou-Zoo, Teatre Nacional Auditori, Glòries-Torre Agbar, Sagrada Familia, Recinte Modernista de Sant Pau, Park Güell, Tibidabo, La Pedrera and Casa Batlló.