One of the coolest things about Ultima Online was the custom homes.
The biggest houses had only four floors, but if you were clever, you could make them appear to have more than four, and if you worked at it, you could create the illusion of features like a working dock too.
The Pyramid was my main residence. It was also only four floors, but it looked like it was seven stories tall. The interior was comfortable and homey, unlike the dock-house. The Dock-House was just a warehouse for my ill gotten gains, so the 'feel' of that place was never important.