A more ground level view of my incarnation of the castle. The card's info says:
My Little Pony Celebration Castle
EARTH/Pony Building/Level 4/ATK 0/DEF2500
This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except when you control "25th Anniversary Celebration". This card cannot be destroyed by battle. Once per turn, you can equip this face-up card with 1 "My Little Pony" monster you control except a "My Little Pony Pony Building-Type monster.
Rare