.jpg) Seven Foot Knoll Light at its original location (1900) | |
 | |
| Location | originally at the mouth of the Patapsco River in the Chesapeake Bay; relocated to the Inner Harbor in Baltimore, Maryland |
|---|---|
| Coordinates | 39°17′01″N 76°36′19″W / 39.2836°N 76.6054°W (current) 39°09′18″N 76°24′33″W / 39.1551°N 76.4091°W (original) |
| Tower | |
| Constructed | 1856  |
| Foundation | screw-pile |
| Construction | wrought-iron (originally cast-iron) |
| Automated | 1949 |
| Height | 40 ft (12 m) |
| Shape | cylindrical house |
| Heritage | National Register of Historic Places listed place |
| Light | |
| First lit | 1856 |
| Deactivated | 1988 |
| Focal height | 17 m (56 ft) |
| Lens | fourth-order Fresnel lens |
| Range | 12 nmi (22 km; 14 mi) |
| Characteristic | Fl WR 6s |
Seven Foot Knoll Light | |
 Seven Foot Knoll Lighthouse at its present location | |
| Location | Pier 5, Inner Harbor, Baltimore, Maryland |
| Area | less than one acre |
| Built | 1875 |
| NRHP reference No. | 89001096[1] |
| Added to NRHP | August 22, 1989 |
The Seven Foot Knoll Light was built in 1855 and is the oldest screw-pile lighthouse in Maryland. It was located atop Seven Foot Knoll in the Chesapeake Bay until it was replaced by a modern navigational aid and relocated to Baltimore's Inner Harbor as a museum exhibit.