Budapest - World City on the banks of the Danube

Wondering what role it played in the development of Budapest, that it lies on the banks of the Danube? What makes Budapest a world city? What do underground utilities hide? How does the city work? Where do young people like to go? "It's not a guidebook, it's not a guide, it's all the more exciting!" - Some sections of the Grand Boulevard were named after Habsburg rulers. Let's go through it together! - The destruction of the icy flood of 1838 also had a beneficial effect on the development of the city. Discover why!