Former teacher training college
The archdeacon'slibrary first opened in 1793. It currently boasts over 130,000 extremely rare books including Medieval manuscripts, incunabula, 16C, 17C and 18C works and the only letter written by Mozart on Hungarian soil. Thepainted ceiling , the work of Johann Kracker in 1770, is one of Hungary's most famous frescoes. Also worth visiting are theobservatory , home to a small astronomical museum and theCamera obscura which offers an insight into the mysteries of the darkroom.