Dream Castle

It's a very old castle even though it doesn't look like it. It's where Lunarstar was born and where the first Gate sits. When the old Dream Castle was destroyed centuries ago during a war, the ponies decide to move the castle and have it rebuilt and so it has sat in the same spot untouched by war till now.

Moonlight Castle

It's old but not as old at Dream Castle and not as big. Moonlight Castle sits on Mooney Mountain which is a very long way from Ponyland. It's where the second Gate sits.

Winterfall Castle

It's an old castle in the North, hidden in a Secret Valley. The third and finale Gate sits in it's flower garden.