They probably use the word "carousel" on coasters to make it sound like a special element over the helix or maybe it is just to try and make it fancy like rcjp said. Still it will always be a helix. I also really like the barn headchoper element.
I'll go, guess this park:
-has a roller coaster were the second drop is bigger than the first
-has a roller coaster designed by Premier Rides
-in the USA
-6 roller coasters
^I agree too, the part that I really I like of Twisted Colossus is the bit of fun before the chain lift which is also unique because on most coasters, they just go right to the lift with one or two turns, but on Twisted Colossus:
^With apple pie!
Anyway now there is hardly any snow so we will not get anymore gorgeous pictures for the time being. But for the good news, they are almost done building it with only the carousel and the heart-line roll left.
Pretty good recreation, the only things that I find wrong are some of the transitions are too intense over the real Fury 325 and a few minor mistakes in the track. But excellent job so far.