Category:Buildings and structures in New Castle County, Delaware

• Buildings and structures in New Castle, Delaware‎ (1 C, 6 P)
• Buildings and structures in Middletown, Delaware‎ (6 P)
• Buildings and structures in Newark, Delaware‎ (2 C, 33 P)
• Buildings and structures in Wilmington, Delaware‎ (6 C, 52 P)

C

• Churches in New Castle County, Delaware‎ (1 C, 25 P)

H

• Houses in New Castle County, Delaware‎ (3 C, 144 P)

M

• Museums in New Castle County, Delaware‎ (3 C, 14 P)

N

• National Register of Historic Places in New Castle County, Delaware‎ (2 C, 273 P)

S

• Schools in New Castle County, Delaware‎ (2 C, 20 P)

T

• Transportation buildings and structures in New Castle County, Delaware‎ (2 C, 8 P)

A

• Ashton Historic District (Port Penn, Delaware)
• Auburn Valley State Park
• Augustine Beach Hotel

B

• Bellanca Airfield
• Broad Dyke

C

• John Carney Agricultural Complex
• Christiana Mall
• Concord Mall (Delaware)
• Correll's Farm and Lawn Supply

D

• Delaware City Refinery
• Delaware Park Racetrack
• Delaware School for the Deaf

E

• J. Eastburn Barn
• Edgar M. Hoopes Dam
• Eleutherian Mills

F

• Fort Casimir
• Fort Christina
• Fort Delaware
• Fort DuPont
• Fort DuPont State Park

G

• Garrett Snuff Mill
• Greenbank Historic Area

H

• Hindu Temple of Delaware
• Howard Pyle Studios

K

• Killgore Hall

L

• J. Lindsay Barn

M

• Middletown Historic District (Middletown, Delaware)
• Mount Cuba Astronomical Observatory
• Mt. Airy School No. 27

N

• National Register of Historic Places listings in southern New Castle County, Delaware
• National Register of Historic Places listings in northern New Castle County, Delaware
• New Castle Air National Guard Base
• Newport Masonic Hall
• Newport National Bank
• Newport station (Delaware)

O

• Odessa Historic District
• Old Brick Store
• Old Post Office (Kirkwood, Delaware)

P

• Port Penn Historic District

R

• Philip Reading Tannery

S

• Frank E. Schoonover Studios
• Summit Airport (Delaware)

T

• Townsend Historic District
• Tri-State Mall

V

• James T. Vaughn Correctional Center

W

• R. Walker Barn
• Wilmington Airport (Delaware)
• Woman's Club of Newport