Like St. Petersburg, Copenhagen sits on the edge of the Baltic Sea, and like St. Petersburg, Copenhagen is dotted by beautiful canals. Copenhagen's most famous canal district, perhaps, is the Nyhavn, the area of town that connects Copenhagen's old city center with the sea. Dug in the 1670s, the Nyhavn was once known for its salty, seafaring clientele, as sailors coming into Copenhagen would frequent the area looking for alcohol and prostitutes—Copenhagen's equivalent of a red light district. The famous Danish author Hans Christian Andersen also lived in the Nyhavn for almost two decades—he wrote his famous story "The Princess and the Pea" in his apartment at No. 20 Nyhavn. Today, the area is known for its beautiful, colored row houses and historic wooden ships.