The Palace of the Parliament is the world's largest administrative building (for civilian use; The Pentagon in the United States is larger). It measures 270 m by 240 m, 86 m high, and 92 m under ground. It has 1,100 rooms and is 12 stories tall, with additional 8 underground levels. The palace was intended to be used by the sovereign Nicolae Ceausescu, Romania's supreme ruler and dictator. Colossal parliament building known for its ornate interior, it is now housing the Senate and the Chamber of Deputies, three museums and an international conference center. The National Museum of Contemporary Art, the Museum of Totalitarianism and Socialist Realism and the Museum of the Palace are hosted inside the palace.
Former imperial palace in the centre of Vienna. Part of the palace forms the official residence and workplace of the President of Austria. Built in the 13th century and expanded in the centuries since, the palace has housed some of the most powerful people in European and Austrian history, including monarchs of the Habsburg dynasty, rulers of the Austro-Hungarian Empire. It was the principal imperial winter residence. The palace has 2600 rooms.