Canterlot Castle

Canterlot Castle is the palace where Princess Celestia and Princess Luna lived and ruled Equestria from, first featured in The Best Night Ever. It consists of at least the throne room, a large ballroom, a kitchen, a telescope observatory, and the Pony Princess Wedding Castle ceremonial hall. Starting with School Daze - Part 2, the throne room is redesigned so that now both Celestia and Luna have their own thrones, patterning after its design in My Little Pony The Movie.

In Sparkle's Seven, Star Swirl the Bearded shields the castle with shards from Queen Chrysalis' throne to prevent any and all magical incursion. Large fans are also installed on the outer upper levels, so as to repel any attempt by intruders to simply fly in.

In The Last Problem, as a result of Celestia and Luna retiring and moving to Silver Shoals, Twilight moves into the palace and becomes the new ruler of Equestria.

Throughout the series, the castle has been frequently attacked by villains: In When the Cold Breeze Blows Away, it is where Princess Celestia and Princess Luna with the Mane Six could be allied with Grand Alliance in during World War III
 * In A Canterlot Wedding, Queen Chrysalis infiltrates the castle by impersonating Princess Cadance.
 * In Twilight's Kingdom, Lord Tirek and Discord attack the castle, where Tirek breaks into the throne room and sends Celestia, Luna, and Cadance to Tartarus.
 * In My Little Pony The Movie, the castle is taken over by the Storm King and heavily damaged by his Staff of Sacanas.
 * In The Beginning of the End, King Sombra invades the castle and covers its interior with dark crystals.
 * In The Ending of the End, the castle is almost entirely destroyed by Chrysalis, Tirek, and Cozy Glow.

Until the USRAC War, it has been under attacked and complete destroyed by Emperor Silbergeld who led the federal army, Gerasecia, New Central Powers due to Emperor Silbergeld's revenge since Twilight Sparkle being went AWOL that caused Princess Celestia has been captured in during Battle of Canterlot after Canterlot is almost entirely damaged or probably destroyed, unlike Chrysalis, Tirek, and Cozy Glow or Discord attack it.

After first attack of Gerasecia, Canterlot is completed re-built even though Canterlot Castle has been complete destroyed.