|The first evidence of a stable settlement at the top of the gasteiz hill is documented.
|The first streets are paved in stone.
|The first walled enclosure of villasuso is built.
|The first romanesque-style church of santa maría is built attached to the walls.
|The foundations are laid for what will become the current church
|The works for the new church are well advanced. The original Romanesque stonework can be demolished and the new church consecrated.
|The envelope of the church is completed. The triforium is advancing and the high timber vaults are constructed. The Chapel of Santiago is built.
|The former parish acquires the title of collegiate church. The triforium is completed and the wooden vaults are replaced by stone ones.
|Chapels are opened and the vaults of the portico and the original sacristy are built. Construction of the bell tower begins. The first structural problems become apparent during this period.
|A new enclosure is constructed with graves for the deceased. The tower and sacristy are completed and the structural problems become more evident.
|The former collegiate church receives the title of cathedral.
|The first comprehensive restoration plan is drawn up by Manuel Lorente.
|The building is closed to the public due to the structural problems detected.
|The Cathedral Rehabilitation Master Plan is presented at the First European Congress on Restoration of Gothic Cathedrals, held in Vitoria.
|The current structural rehabilitation and the Open for Works visit programme begin.
|Open for worship.