The Zwinger (“Międzymurze”) archaeological and architectural reserve is a new underground exhibition located in the western part of the Wawel Hill. The name of the exhibition refers to the space between the castle walls. In the case of the Wawel zwinger, the exhibition space is delineated by the interior and exterior walls of the late 18th-century fortifications. Between them are the ramparts exposed by archaeologists in the period spanning the 11th to 19th centuries. The name of the exhibition is also a tribute to the generations of Wawel archaeologists who referred to the area surrounding the Thieves' Tower and the Dragon's Den as a Zwinger during their surveys.