Maribo, city, central Lolland island, Denmark, on Maribo Lake. The city (chartered 1416) grew up around an early 15th-century Bridgettine convent, the chapel of which survives as the cathedral of the Lolland-Falster diocese. The Diocesan Museum displays prehistoric and medieval artifacts and a collection of Danish paintings. Pop. (2008 est.) 6,104.