Sioux City Central High School and Central Annex
Sioux City Central High School and Central Annex | |
Sioux City Central High School building | |
| Location | 1212 Nebraska & 1121 Jackson Sts., Sioux City, Iowa |
|---|---|
| Coordinates | 42°30′12.6″N 96°24′10.3″W / 42.503500°N 96.402861°W |
| Area | less than one acre |
| Built | 1892 |
| Built by | Eric Lund |
| Architect | F.S. Allen |
| Architectural style | Gothic Revival Romanesque Revival |
| NRHP reference No. | 74000817 (original) 16000641 (increase) |
| Significant dates | |
| Added to NRHP | July 23, 1974 |
| Boundary increase | September 19, 2016 |
The Sioux City Central High School and Central Annex, also known as the Castle on the Hill, are historic buildings located in Sioux City, Iowa, United States. The high school building was listed on the National Register of Historic Places in 1974. The annex was added to the historic designation in 2016.