Canaan's Superior Citadel

You conjure a three-story tower made of stone, wood, or similar suitably sturdy materials. The tower can be round or square in shape. Each level of the tower is 10 feet tall and has an area of up to 900 square feet. Access between levels consists of a winding spiral staircase that takes up one 5-by-5 foot square. Each level takes one of the following forms, chosen by you when you cast the spell:

• A bedroom with beds, chairs, storage chests, and a magical fireplace

• A study with desks, books, bookshelves, parchments, ink, and ink pens

• A dining space with a table, chairs, magical fireplace, containers, and cooking utensils

• A sparring room with wooden swords, staves, and shields

• A lounge with couches, armchairs, side tables and footstools

• A washroom with toilets, washtubs, a magical brazier, and sauna benches

• An observatory with a telescope and maps of the night sky (always the top floor)

• An unfurnished, empty room

The tower walls each have an AC of 10 and hit points equal to 20 times the spell level, and if it is reduced to 0 hit points the wall is shattered.  Destroying three walls on a single floor causes the tower to disintegrate, ending the spell.  Any wall may have a window, which reduces its total HP by half.  There is a single door to the tower on the bottom floor that can be opened using a password chosen by the caster during the spell's creation.  The door can be forced open with an Strength (Athletics) check or lockpicked with a Dexterity (Sleight-of-Hand) check with a DC equal to the caster's spell save DC.

The interior of the tower is warm and dry, regardless of conditions outside. Any equipment or furnishings conjured with the tower dissipate into smoke if removed from it (except for parchments & ink). At the end of the spell’s duration, all creatures and objects within the tower that were not created by the spell appear safely outside on the ground, and all traces of the tower and its furnishings disappear.

You can cast this spell again while it is active to maintain the tower’s existence for another 24 hours. You can create a permanent tower by casting this spell in the same location and with the same configuration every day for one year.