Darth Vader's Castle

Darth Vader's castle, also known as Vader's personal abode, was a stronghold located on the volcanic world of Mustafar. Once the site of a Sith temple, during the reign of the Galactic Empire it served as the personal residence of Darth Vader, a Sith Lord who wore life support armor after sustaining grievous injuries on Mustafar.

Details
The castle occupied by the Sith Lord Darth Vader was constructed by Vader himself as a testament to his own might. It was located on the site of his greatest defeat, and was built over an ancient Sith cave. The complex's location and design came as much from the dark side of the Force as it did Vader's personal history.[4]  The central tower was constructed out of obsidian,[2]  and its tuning towers served as conduits for the dark side. Within, Vader maintained a bacta tank which he would rest inside.

Role in the Pooh's Adventures
Darth Vader's castle will debut in Pooh's Adventures of Rouge One: A Star Wars Story as the temporary lair for Darth Vader, Bowser, Bowser Junior, Mistress 9, and Team Rocket. After the events of Pooh's Adventures of Star Wars Episode VI: Return of the Jedi, the castle is now owned by Zordon, the Republic, the Utrom, and the 100 Acre Wood Rebel Alliance making the castle a temporary headquarters in case of an emergency.

Trivia

 * The Castle will return after part 1 of Pooh's Adventures of Avengers: Infinity War after the Power Chamber is destroyed by Thanos and the Masters of Evil.