Pisa Cathedral is a medieval Roman Catholic cathedral dedicated to the Assumption of the Virgin Mary, in the Piazza dei Miracoli in Pisa, Italy. It is a notable example of Romanesque architecture, in particular the style known as Pisa Romanesque. Romanesque architecture is distinguished by massive quality, thick walls, round arches, sturdy piers, groin vaults, large towers, and decorative arcades

The original building plan was a Greek cross with a grand cupola at the crossing, but today the plan is a Latin cross with a central nave flanked by two side aisles on each side, with the apse and transepts having three naves.

Construction on the cathedral began in 1063 and in 1092 it was declared primatial church. The structure's present appearance is the result of numerous restoration campaigns that were carried out in different eras. The first radical interventions occurred after the fire of 1595, when the roof was replaced and sculptors created the three bronze doors of the facade.

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