began (it was built between 1003 and 1038). The settlement had about 3500 inhabitants at this time and was the royal seat for hundreds of years. 43 kings were crowned in Székesfehérvár (the last one in 1526) and 15 kings were buried here (the last one in 1540).
In the 12th century the town prospered, churches, monasteries and houses were built. It was an important station on the pilgrim road to the Holy Land. Andrew II issued the Golden Bull here in 1222. The Bull included the rights of nobles and the duties of the king, and the Constitution of Hungary was based on it until 1848. It is often compared to England's Magna Charta.
During the Mongol Invasion of Hungary (1241–1242) the invaders could not get close to the castle: Kadan ruled Mongol warriors could not get through the surrounding marshes because of flooding caused by melting snow. In the 13th–15th centuries the town prospered, several palaces were built. In the 14th century Székesfehérvár was surrounded by city walls.
Ottoman period
The Ottomans occupied the city after a long siege in 1543 and only after a sally ended in most of the defenders including the commander, György Varkoch, being locked out by wealthy citizens fearing they might incur the wrath of the Ottomans by a lengthy siege. They discovered after surrendering, however, that the Ottomans were not without a sense for chivalry and those responsible for shutting the defenders out were put to death.
The city remained under Ottoman occupation for 145 years, until 1688, except for a short period in 1601 when it was re-occupied by an army led by Lawrence of Brindisi. The Ottomans destroyed most of the city, they demolished the cathedral and the royal palace, and they pillaged the graves of kings in the cathedral. They named the city Belgrade ("white city", from Serbian Beograd) and built mosques. In the 16th–17th centuries it looked like a Muslim city. Most of the
