This palace has been built in survival on Survival.MindlessCraft.Com I started as a regular player but acquired fly then later opp. I did have access to W,E and creative but didn't use it on the main build.

Each room in the palace has been fully furnished, there is a full maze of secret passages inside the walls of the main palace for the servants and guards (dogs), to navigate the palace without disturbing any guests.
There's a reception room, ladies sitting room library art room with main stars sunset ball room that when the sun sets it shines through the sunset window and changes color to match the window.
There is also a dining room, throne room, war/map room, and guest rooms, with on sweet bathrooms.
Then through secret passages is palace kitchen mess room for staff and soldiers staff bedrooms, including rooms for the butler, steward and cook. theirs maids and footman's rooms and a chilling area for them, a bar for the solders off there quarters and there own area, also a fully stocked armory.
Through another section theirs the royal private quarters, with living room music room another library, gym, swimming pool , private bedrooms with on-sweets, lab, and enchanting tower.
on the rooftops is 2 bird aviaries, a large aquarium, and a tranquil garden.
The last 2 pictures are of the underground chest room which is below the palace where I kept all my materials as I built it, the domed sealing was hollowed out with pick and shaped by me, not with W,E. my mine is of coarse under that :)
This has been solely my work but I have been donated some essential equipment (mending books etc) from my good friend BMooney who runs the server.
As I explained I didn't use W,E to build any of the palace but did use it to fix a section which was annoyingly 1 block out, I also used W,E to make the google map for the laptop.
This is definitely my best build ever. :D