Most of the period architecture of Romania has been built during the reign of the Romanian kings Carol I, Ferdinand, Carol II and Michael in a period spanning from the mid c19th until mid c20th. The Royal Standard has been a familiar presence on the skyline of Bucharest and many other cities during that time, indicating the presence of the sovereign there. The flag was forbidden in Romania during the communist dictatorship and the first years of post-communist transition when the country was led by a second generation of communist apparatchiks. Here is a short contemporary video, filmed in 2010, of that flag (a model that dates from the 1920s) waving graciously again from atop of the Elisabeta Palace in Bucharest indicating that HM King Michael is in residence there.
Valentin Mandache, architectural historian 