They used to say "who in their sane mind would build a city in the middle of nowhere where there is no mountains, forests, water or roads?". Still, the answer is a mystery, but Debrecen is the second (or third, depends on the census) largest city of Hungary. It used to be Europe's largest Calvinist city (was called "The Calvinist Rome"), and the Grand Church (''Nagytemplom'') is a reminder of the city's heritage.Debrecen also has a university with all kind of science areas. It has about 25000 students. The main building at the ''Nagyerdo'' is beautiful. http://wikitravel.org/en/Debrecen