The Palace of Parliament, located in Bucharest, Romania, is one of the largest administrative buildings globally. Built during the communist era, it's known for its monumental scale and neoclassical design. Covering 365,000 sqm, it houses Romania's Parliament and various government offices. Controversial for its construction's impact on the city, it's a major tourist attraction today, offering tours of its opulent interiors. It's often considered the heaviest building worldwide, weighing around 4.1 million metric tons.