Blow Up Hall 50 50 is an avant-garde luxury hotel and art gallery located in Poznań, established on the initiative of Grażyna Kulczyk and situated within the Stary Browar complex. In 2009, The Guardian recognized the hotel as the most futuristic in the world, thanks to its unique guest service principles, including the absence of a reception desk and room numbers. Instead of keys, guests are provided with iPhones that guide them to their rooms and unlock the doors. Each room is distinct, featuring avant-garde design elements. The hotel’s name references Michelangelo Antonioni’s film *Blow-Up* and the "Blow Up Commission," an electronic installation by Rafael Lozano-Hemmer, which is integral to the hotel’s concept. A key aspect of Kulczyk’s vision is the 50/50 principle, where 50% of the project’s construction is dedicated to art and the other 50% to a complementary element, such as pleasure, in the case of Blow Up Hall. The hotel boasts a significant collection of contemporary art, including works by artists such as Vanessa Beecroft, Spencer Tunick, Patrick Tourneboeuf, and Sylwester Ambroziak. The collection features large-scale photographs by Beecroft, sculptures, and unique artistic installations. The hotel is a member of the prestigious Tablet Hotels organization, which brings together luxury hotels worldwide. In 2010, Blow Up Hall 50 50 received a five-star rating from the Polish hotel categorization commission, sparking controversy due to its failure to meet some requirements outlined in the Tourism Services Act. The hotel combines modern architecture, innovative hospitality approaches, and rich cultural activities, making it a unique destination on the map of Poznań.