Sioux City Central High School and Central Annex (Boundary Increase)

1212 Nebraska & 1121 Jackson Sts., Sioux City, Iowa. County/parish: Woodbury.

Added to the National Register of Historic Places September 19, 2016. NRIS 16000641.

1 contributing building.

Also known as:

• Castle on the Hill
• Vocational and Gymnasium Building

LC