Did you know that one of the longest cave system is just under the streets of Budapest? And the fact that the ruins of the most monumental synagogue under the roads of Buda Castle have once been re-buried? Why did Fishermen’s Bastion and Water Town got their names? Is it true that King Matthias was so just and had daily walks among the folks of Budapest? Why did the towers of Dominical church and Matthias church had been confused in Schedel Chronics? How was András Hadik able to make Berlin to pay extra tax? Why were the monks selling the special beer of Tabán Brewery? Within the confines of an exciting walk I intend to shed light on all the answers to the above mentioned questions and introduce the secrets of Buda Castle!