The Oomaeda family is one of the richest in Seireitei and they want their estate to show it. Their house is one of the most pimped-out buildings in all Seireitei, if not the one. There is gold everywhere. Gold and jewels. It isn't beautiful, because the Oomaedas have no taste, but it's definitely worth seeing. Though all the gold might blind you. It's also a good place to go if you are hungry and have no money. If you ask nicely, you can get lots of luxurious food for free. If you don't mind eating leftovers.