
Without spoiling anything, the castle settlement is uninhabited, and while you can fast travel to it, it is abandoned and does not function as the other settlements do. There will be no missions available there and it simply acts as a location to progress the story. That’s why it would be greyed out.
Full Answer
How did the castle transform into a settlement?
Over time, the Castle transformed into the first so-called "settlement" with communal resources, medical services, and an organized defense aided by the build-ing's formidable structure.
Can you fast travel to the castle settlement?
Without spoiling anything, the castle settlement is uninhabited, and while you can fast travel to it, it is abandoned and does not function as the other settlements do. There will be no missions available there and it simply acts as a location to progress the story.
Why is the castle settlement greyed out in Fallout 76?
Without spoiling anything, the castle settlement is uninhabited, and while you can fast travel to it, it is abandoned and does not function as the other settlements do. There will be no missions available there and it simply acts as a location to progress the story. That’s why it would be greyed out.
Where is the castle settlement in the Division 2?
About midway through The Division 2’s campaign, you will come across the Castle settlement. It is located in East Mall, somewhere in the south-eastern portion of the map. You will be required to go here as part of the critical path, and you will receive a cutscene detailing the fate of its inhabitants.

What did Agent Kelso do to the true sons of the Jefferson Plaza?
An enraged Kelso demanded that the Division agent should assault the True Sons inside Jefferson Plaza and kill every last one of them as an act of vengeance for the destruction they have caused to the Castle Settlement.
Why did the Smithsonian Castle collapse?
Due to repeated attacks from the True Sons, the Castle eventually collapsed. After the initial smallpox outbreak in December, CERA established one of its very first refugee camps in the Smithsonian Castle on the National Mall.
Who was the Castle Settlement?
The Castle Settlement was established by Mike Snow, a former Sergeant in the True Sons, after he became disgruntled with Ridgeway's leadership and disavowed the atrocities being committed against civilians. Snow opened the doors of the Castle to anyone affected by the crisis, which led to the spread of Green Poison from within the walls. Due to repeated attacks from the True Sons, the Castle eventually collapsed.
Who assaulted the Castle Settlement?
The Castle Settlement was regularly assaulted and tormented by the True Sons, who demanded more tribute from the Castle Settlement as payment for being in operation.
