Bucharest’s massive parliament was originally designed to bring a very large, centralized communist government together under one roof. It was another five years after the revolution before it was completed and used to support the emerging democracy. With 1100 rooms it is the second largest building in the world and the heaviest building in the world.
The National Cathedral of Romania is currently under construction. When completed it will be the largest Orthodox cathedral in the world. It is stunning inside with all of the surfaces being covered with mosaics made up of small tiles, and when complete will be jaw dropping.
Awesome.