In the city of spires and shadows, where every street hides a story and every stone whispers a secret, we will walk not only through history, but also through the pages of a modern thriller. This is an unofficial book tour, inspired by Dan Brown's novel Secret of Secrets, which brought the world-famous symbologist Robert Langdon into the heart of this city. Even if you have never opened the book, don’t worry. You will not need to know the plot to enjoy this journey. We will not reveal spoilers or give away mysteries meant for the page. Instead, we will trace the same paths Robert walked, stand where he stood, and let the places themselves tell us their own truths. Along the way, you will hear the legends, the hidden histories, and the curious facts that make Prague one of the most enigmatic cities in Europe. Think of it as stepping into a living puzzle. One moment you will be surrounded by Gothic towers, the next by baroque palaces, Cold War bunkers, or surreal modern art.