After breakfast on board, guests who wish may join the optional Barcelona City Tour organised by our guide. We begin our exploration of Barcelona, one of Europe's most impressive cities, with our private coach waiting at the port. First, we travel along La Rambla, the city's liveliest and most famous street, and see the magnificent Christopher Columbus Monument, commemorating the navigator who discovered the Americas. We then take a panoramic tour of Maremagnum Harbour, known for its modern architecture and shopping areas; Barceloneta Beach, one of the Mediterranean's most popular beaches; and the Olympic District and harbour, redeveloped for the 1992 Summer Olympics. Continuing our tour, we see Plaça de Catalunya (Catalonia Square), considered the heart of the city, before travelling along Passeig de Gràcia, which resembles an open-air museum thanks to the impressive works of world-famous architect Antoni Gaudí. Here, we will have the opportunity to enjoy panoramic views of historic buildings reflecting Gaudí's unique architectural vision. Afterwards, we view the exterior of the magnificent Sagrada Família Basilica, one of the most important symbols of Barcelona and Spain, under construction since 1882 and listed as a UNESCO World Heritage Site. During our tour, we also ascend Montjuïc Hill, overlooking the city, for a photo stop with magnificent bird's-eye views of Barcelona Harbour, the city centre and the Mediterranean. At the end of our tour, enjoy free time on La Rambla to shop, experience the city's lively atmosphere or sample Spanish cuisine. We meet at the designated time and return to our ship. Dinner and overnight on board.