Point Lookout Lighthouse

The Lighthouse is a location in Point Lookout.

A Meeting of the Minds
The last main quest in the Point Lookout (add-on) takes place in the Underground Lab (basement) of the lighthouse. Before the Great War, the lab was known as the St. Aubin Medical Facility. Sometime after, Professor Calvert began using it as a secret laboratory. It is the location of the final confrontation between Desmond Lockheart, Calvert, and the PC.

Lighting the Lighthouse
There is an unmarked quest in which the player can turn on the lighthouse. The note to start this quest is found at the top of the Lighthouse and outside of Haley's Hardware, to the right of the front entrance.

Quest Video Walkthrough: Click Here

Notable loot
During "Meeting of the Minds" you are able to go into the basement of the lighthouse. Scattered throughout the basement are Mesmetron Power Cells.

On the spiral stairs there are many cameras which can be used for Broken Steel's Some Assembly Required repeatable quest.

Bottle of Moonshine by barrier at top before going back outside.

The Lighthouse spawns smugglers as long as it is not still dependent on Point Lookout's main quest.

Appearances
The lighthouse appears in the Fallout 3 add-on Point Lookout.

Trivia
This location is based on Point Lookout Light (yet it's appearance closely resembles the Assategue Light). A lighthouse which is known for its association with ghost stories and has been the subject of paranormal investigations.

At least one of the bulbs at the top can be replaced (there is a holotape on a table at the top giving the location of the bulb).

Stairs: There are exactly 186 stairs on the spiral staircase,  on the way to the top of the lighthouse.