Helsingor (English Elsinore), town and seaport, eastern Denmark, in Frederiksborg County, Sjaelland (Zealand), near Copenhagen. Helsingor , with Kronborg Castle east of the town, is famous as the locale of Shakespeare's Hamlet. The castle, built during the 16th century, is now used chiefly as a maritime museum. Among the principal industries here are glass manufacture, the weaving of fishing nets and coarse cloth, shipbuilding, marine engineering, and iron founding. HelsingÃ ¸r has a fine harbor, equipped with dry docks for the repair of ships. A railway ferry joins Helsingor with Helsingborg, Sweden, across the Øresund Population (2000 estimate) 59,492.