My first castle since early 80's, inspired by the 32x32 challenge at CC.
For accessibility I couldn't choose wether to build it in different layers or with swinging walls, so I did both.
Minifigs can enter even the smallest towers.
There are also four holes in the walls to light the fireplace or the torch.
Romans used a lot of bricks. In the third century they build the Aurelian walls around Rome. Different gates flanked by round towers still exist today.
I made two gates using the Café Corner standard, so it can be added in a town display too. There are 8 seperate modules that can be combined in different ways.