The Catedral de la Santa Creu i Santa Eulàlia watches impassively the passing of time in a constantly moving and changing Barcelona. The Cathedral also reflects the different generations who have left their imprint and the blend of architectural styles in this predominantly Gothic building which needs to be viewed inside in order to fully understand its splendor.

The Jewish Quarter of medieval Barcelona is home to one of Europe’s oldest synagogues, which has been restored and opened to the public. From the 9th century to the 14th century Barcelona had a large Jewish community that is thought to have numbered around 4,000 people. Two neighbourhoods of narrow streets, called "calls" from the Hebrew word "kahal", which means community or congregation, sprung up around them.

Barcelona's Carrer Montcada is lined with a succession of medieval, Renaissance and baroque palazzos, their majestic doorways opening to reveal their beautiful courtyards of venerable stone. They bear witness to the rich and glorious past of medieval Barcelona's main street which was home to the city's nobles.

The Conjunt Monumental de la Plaça del Rei in Barcelona is, arguably, the Gothic architectural ensemble which best exemplifies the city's medieval past.

The Plaça Sant Jaume has been the city's political centre almost since its inception. Today the Plaça Sant Jaume is an open space, a "lung" in the middle of the Gothic Quarter. The square is the site of the most important buildings in the lives of Barcelona and Catalonia: City Hall and the Palau de la Generalitat.

The basilica of Santa Maria del Mar in Barcelona, also known as the "cathedral of La Ribera", is one of the most perfect examples of Gothic style architecture due to its harmonious proportions and the serenity of the ensemble.