There are several answers.
Zagreb- Croatia
Sarajevo- Bosnia and Herzegovina
Podgorica- Montenegro
Tirana- Albania
Pristina- Kosovo
Belgrade- Serbia
Skopje- Macedonia
** you may consider Ljubljana, Slovenia an answer but Slovenia is more east of Hungary than south.
Vienna is the capital of Austria
Hungary is an European Country, The capital of Hungary is Budapest.
austria
Budapest is the capital of Hungary. (It is in Central Europe, bordered by Austria, Serbia, Slovakia, Ukraina, Romania, Slovenia, and Croatia.)
AustriaVienna is the capital and largest city of Austria.
Austria
Hungary
Vienna, the capital of Austria, is located at the eastern border of the country, close to Slovakia and Hungary.
The Czech Republic.
Austria is that country
Slovakia
Austria