Locul unde s-a infaptuit Unirea Principatelor Romane, ajuns in paragina.
Hotelul Concordia este cladirea din Bucuresti care a gazduit istorica intalnire din noaptea de 23 spre 24
PETRACHE POENARU - The Fountain Pen inventor. Poenaru, who had studied in Paris and Vienna and, later, completed his specialized studies in England, was a mathematician, physicist, engineer, inventor. While a student in Paris, Petrache Poenaru invented the world's first fountain pen, an invention for which the French Government issued a patent on 25 May 1827.