Start your tour from Plaça Catalunya and head to Passeig de Gràcia, one of the most significant avenues in Barcelona for its lavish shops and impressive architecture. Here, you can spot Gaudí's influence in places like the undulating façade of La Pedrera and the modernist lampposts that line the street. Make your way to Casa Batlló, an extraordinary building with its exterior decorated with colourful mosaic of tiles. Your guide will lead you in avoiding through the line, and takes you on a tour through the magnificent rooms and floors, including the rooftop where you can get an up-close look at the tiled spine of the dragon.

Then continue your journey to visit another masterpiece, Sagrada Família in the Eixample district. The overwhelming basilica, which has yet to be completed, is one of Gaudí's finest works with immaculate designs, opulent interior and vaulted ceilings. You will avoid the long queues when entering this UNESCO-listed site.  Your guide will explain the significance of every feature of this intricate building. Your tour ends when you return to your starting point in Barcelona.