Barcelona is celebrated for its unique historical architecture. Antoni Gaudí is considered the genius of Catalan Modernism. You will see several of his creative buildings in the Barcelona Two gallery. On the left is the Nativity Façade of Sagrada Família. Construction of this famous minor basilica began in 1882. It is scheduled for completion in 2026. In this gallery you will enjoy Neo-Classical government buildings, former Olympic stadiums, a 17th century castle, a Gothic cathedral plus the remnants of a Roman wall from the 1st century BC. An example of what is ahead is the Neo-Mudéjar style of the Arc de Triomf with its red brick columns and angel sculptures.