Győr's Town Hall is the most beautiful building in neo-baroque style in the whole city. You surely can't miss it. It can only be admired from outside but for a special tour for which you need to pre-book at the city's visitor center.
Tue: 10 am and 2 pm
Wikipedia (Hungarian) https://hu.wikipedia.org/wiki/V%C3%A1rosh%C3%A1za_(Gy%C5%91r)
Official Website http://latogatokozpontgyor.hu/
Coordinates 47°40'59.63" N 17°38'6.77" E