Castle of Lions

The Castle of Lions, or Castle-ship, is a prominent feature of Voltron: Legendary Defender canon, though it is heavily expanded upon in Voltron: Duality. It was originally built by Coran's grandfather.

Features
As in V:LD canon, the Castle-ship contains all the amenities expected of a battleship built to house thousands of people.

The central body of the castle is most of the day-to-day features for the paladins and support staff, including general training areas, kitchens, most living quarters, main archives, conference halls, the med bay, the bridge, the engine room, and the weapons and shields systems.

Towers
There are four towers surrounding the main body of the Castle-ship, each dedicated to the colored Lion they house at the base.

Green Tower is dedicated to logistics, such as engineering, food production, and archives. There is a large greenhouse area, as well as a park, complete with fountains, walking paths, benches, and even a few statues of significant historical figures.

Red Tower is mostly equipped for training and weapons development, and a large portion of its core has gravity oriented perpendicular, creating a long, narrow training ground used for marksmanship training and other forms of combat that require space. It has a specialized training course which Nonny has described as à la Ninja Warrior. There are quite a few hidden rooms that have historically been dedicated to the Black Paladin for when they need to get away from everyone who expects them to make all the decisions.

Yellow Tower is dedicated to civilian life, meaning its top floors are a hodge podge of very normal and diverse aspects of life. During Rukka's tenure, the upper floors were mostly playgrounds and daycare centers for the kids on the Castle-ship, but it has also been used as a school, additional medical space, a dedicated diplomatic suite, and more based on the needs of the team.

Blue Tower is the main headquarters of the Voltron Guard and other non-civilian groups. It consists mostly of barracks and training spaces, but also memorials and hangars.