The Budapest Parliament is one of the most important buildings in Hungary and the most well-known in the world. No one can escape the impressive influence of the towering giant building along the Danube, which has become a symbol of the capital and even the entire country in the last hundred years. The Parliament House in Budapest is also an exceptional work in that the entire building and practically all its decoration and all its works of art were created in a single period, and that most of them have survived in their original form to this day. Despite its outstanding importance, no detailed processing, i.e. a large monograph, based on the completeness of the data and documents, has yet been published about the Parliament. This painful void is intended to be filled by this volume, which was created based on the rich collection of contemporary written, printed and material sources. But the work does not only discuss the history and artistic design of the construction of the Parliament, but also the narrower and wider social environment in which it was created. The text is accompanied by extremely rich and diverse visual material.