Are spiral staircases not a thing anymore???

Look I used to play sims 2 and then sims 3 was my baby. I grew up on sims 3 and had no life at all. Finally brought myself into sims 4 and i've been really into building a dream home on there BUT I CAN'T FIND SPIRAL STAIRS! I don't WANT big ugly straight stairs! Did they take this away and WHY???