If you happen to be on an Eastern European tour, or you are just interested in the biggest parliament buildings in the world, here is one of the top contestants, the huge Palace of the People, aka the Palace of the Parliament in Bucharest, Romania, built by the hated dictator, Nicolae Ceausescu (executed in 1989, right before the abolition of capital punishment). As part of his personality cult – characteristic of the communist regimes – he had a huge palace erected in Bucharest.

The Palace was designed and nearly completed by the Ceaușescu regime as the seat of political and administrative power. Nicolae Ceaușescu named it the House of the Republic (Casa Republicii), but many Romanians call it the People’s House (Casa Poporului). The Palace measures 270 m (890 ft) by 240 m (790 ft), 86 m (282 ft) high, and 92 m (302 ft) underground. It has 1,100 rooms, 2 underground parking garages and is 12 stories tall, with four underground levels currently available for the general public and in use, and another four in different stages of completion. The floorspace is 340,000 m2 (3,700,000 sq ft).
(source: Wikipedia