Hillforest
| Hillforest (Forest Hill) | |
| Location | 213 Fifth Street, Aurora, Indiana | 
|---|---|
| Coordinates | 39°3′13.9″N 84°54′6.02″W / 39.053861°N 84.9016722°W | 
| Area | 11 acres (4.5 ha) | 
| Built | 1852 | 
| Architect | Isaiah Rogers | 
| Architectural style | Renaissance, Italian Villa | 
| NRHP reference No. | 71000005 | 
| Significant dates | |
| Added to NRHP | August 5, 1971 | 
| Designated NHL | October 5, 1992 | 
The Hillforest Mansion, also known as the Thomas Gaff House, is located at 213 Fifth Street, in Aurora, Indiana. Built in 1855 on a bluff above the Ohio River, it is one of the finest surviving examples of an Italian Renaissance estate house, and a rare well-preserved example of the work of architect Isaiah Rogers. The mansion, which was designated a National Historic Landmark in 1992, is owned and operated by Hillforest Historical Foundation. It is located in the Downtown Aurora Historic District.