Budapest Map. Explore map of Budapest, it is the largest city and capital of Hungary, and one of the largest cities in the EU. It is the country's principal cultural, commercial, industrial, political, and transportation centre.bout City : Budapest is the capital of Hungary and one of the largest cities in the European Union. Budapest was formed in 1873 unifying the cities of Buda and Obuda on the western banks of River Danube along with Pest which lies on the eastern banks of the river. It was first occupied by Celts during the 1st century.