National Historic Register properties in New Castle, Delaware

• Air Service, Inc. Hangar at Bellanca Airfield
• Amstel House
• George Read II House
• George Read II House
• Glebe House
• Grantham-Edwards-McComb House
• Hermitage, The
• Lesley-Travers Mansion
• New Castle County Court House
• New Castle Historic District
• New Castle Historic District
• New Castle Ice Piers
• Parker's Dairy Palace
• Penn Farm of the Trustees of the New Castle Common
• Stonum
• Swanwyck