Transdanubia is a traditional region of Hungary. It is also referred to as Hungarian Pannonia, or Pannonian Hungary.
Lake Balaton
Hills in Baranya County, Hungary
Dorog, a small industrial town
Image: Zalai dombság
Pannonia was a province of the Roman Empire bounded on the north and east by the Danube, coterminous westward with Noricum and upper Italy, and southward with Dalmatia and upper Moesia. Pannonia was located in the territory that is now western Hungary, western Slovakia, eastern Austria, northern Croatia, north-western Serbia, northern Slovenia, and northern Bosnia and Herzegovina.
The coin of Pius (reverse), with the circumscription REX QUADIS DATUS
Gerulata- a Roman military camp located near today's Rusovce, Slovakia.
Aerial photography: Gorsium - Tác - Hungary
Aquincum, Hungary