Central to Basel in the Cathedral - the symbol of the city. The Cathedral is a late-Roman Basilica with a transverse nave and choir of the XII century and has many typical Gothic elements. The walls of the Cathedral is built of red Sandstone and topped by a roof of coloured tiles and the two towers. Above the Central portal depicts the Emperor Henry II, the founder of the Cathedral, holding a model of the temple. Near the Empress Kunigunda.

After the great fire that occurred in 1258, the Church has been upgraded and in the aisles were arranged chapel-tomb. After the devastating earthquake in 1356 destroyed the vaults, towers and crypt of the Cathedral, the building was rebuilt again in accordance with the style of the time. This is particularly clear in the sculptural decoration of the Cathedral.

In the Northern part of the Cathedral is the tomb of Erasmus of Rotterdam. In the crypt of the Cathedral are preserved fragments of a late-Roman frescoes and Lapidarium – the remains of the masonry of the temple of the ninth century.