Finally, we'll explore the grandeur of the Alba Carolina Fortress, a stunning example of Vauban-style military architecture. Discover the history of this impressive fortress and its role in Romania's past as we explore its many courtyards, ramparts, and bastions. In 1918, Alba Iulia played a pivotal role in the unification of Romania when the Great National Assembly, comprising over 1,200 delegates from all over the country, gathered in the city to declare the unification of Transylvania with Romania. This event is considered one of the most important moments in modern Romanian history and is celebrated every year on December 1st as Romania's National Day. You'll be amazed at the scale and detail of this magnificent structure. You will explore the massive walls, towers, and bastions. In the evening, you will return to Cluj-Napoca, and your day trip will come to an end.