central hall shows a figurative mosaic including various representations of a gothic bestiary, concentrically arranged: two-headed eagles, dragons, griffons, lions. The hall is superposed by a glass ceiling room, where initially a greenhouse was arranged. In spite of its archaic-looking design, the Palace was designed so to integrate modern materials and technologies. Thus, the stone blocks were replaced with light and much cheaper materials. Besides, some rooms were decorated using a special material licensed by Henri Coandă, under the name of bois-ciment and imitating the oak wood. Decorative ironmongery elements are also remarkable and they can be admired for instance on the doors of the Voivodes’ Hall. The building was also equipped with high-tech facilities for those times, such as electric lighting, (pneumatic) heating, ventilation system, thermostat, vacuum cleaners, which were all directed from the machinery room, at the underground level. Taking also into account the 14 fires that affected the previous buildings, Berindei (the main architect) treated the wooden structure of the attic with an ignifugeous product called orniton, while for the roof he used a special material, named eternite. Clock Tower The entrance of the palace is through a great donjon tower, with crenels and alcoves dominated by an eagle with open wings. The tower is the central architectural piece of the palace. On each of the three exposed sides there is a face of the clock with a diameter of . The clock faces are decorated with stained glass representing the 12 astrological signs. Two young men dressed in national costumes, are painted on the sides of the clock faces guarding the clock (design element inspired from the Peleș Castle). The stained glass windows and the cross shaped crenelations are electrically illuminated during the night. The Carillon in the tower has 8 bells that are singing each hour the song "Hora Unirii" with the help of a drum with 69 pins. Moldova National Museum Complex The "Moldova" National Museum Complex () hosts four museums located in the Palace of Culture: Art Museum, Moldavia's History Museum, Ethnographic Museum of Moldavia, and "Ștefan Procopiu" Science and Technique Museum. The Museums also comprise their own stores and libraries, as well as halls for temporary exhibitions. Art Museum The Art Museum, founded in 1860, is the oldest and has the largest art collection in Romania, with more than 8,700 works, out of which 1,000 belong to the national and universal patrimony.