Helsingor (English Elsinore), town and seaport, eastern Denmark, in Frederiksborg County, Sjælland (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. Helsingor has a fine harbor, equipped with dry docks for the repair of ships. A railway ferry joins Helsingor with Helsingborg, Sweden, across the oresund. Helsingor is well known for the Kronborg Castle and its part in Shakespeares "Hamlet".