Vác (approximately "vats"), (Vacov, Waitzen, Vacium) is a city in Pest county in Hungary with approximately 33,000 inhabitants. The town is occasionally known in Hungarian by the archaic names Vacz and Vacs.
Vác is a commercial center as well as a popular summer resort for citizens of Budapest. The cathedral, built 1761–1777, was modelled after St. Peter's Basilica in Rome. The episcopal palace houses a museum for Roman and medieval artifacts. The city is also known for its 18th century arch of triumph and for its beautiful baroque city center.
Bishops from the diocese were influential within the Kingdom of Hungary, with many serving as chancellors or later becoming archbishops.
The town was conquered by the Ottoman Empire in 1541. During the Habsburg Monarchy's wars against the Ottomans, the Austrians won victories against the Turks at Vác in 1597 and 1684.
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According to the 1910 census, the religious make-up of the town was the following:
