Quartz Tower

The quartz tower is one of the structures which can be found most of the time in the nether. When you come in, you would find three guard Skeletons. These are basically wither Skeletons dressed in chainmail armor. On the next floor you would find 5 blazes. One of them wouldn't be the same, and the mobs name is Blazon, (Blazon is a member of the drawing club.) Unlike regular blazes, Blazon is neutral meaning if you attack him, he WILL attack back, and he does hit very hard, so if you step on the second floor, you might wanna come with some iron armor prepared on..
On the third floor, there are actually, no mobs at all, infact you can find loot. But when you get the loot, you fall down into a secret room in the castle. And you have to go all the way back up to receive it again and while you pass, there is a chest. And when you open the chest, you will find a iron sword. Wonder why you'll need it, There's two words: There's mobs. If you came with a sword already, you will not need to use the chest. (Unless you bring a stupid wooden sword lol)
On the Fourth floor, you would find 3 guard Skeletons, and 3 blazes. Make sure you bring some fire and healing potions if you want to visit. On the fifth and last floor, the only mob you would conquer is Ghastiya. Of course she's a ghast silly. Instead of being hostile, she's passive, and very nice. Infact, she can trade you one blaze rod for 5 diamond, 1 bone for 2 eyes of ender, 3 coal for a iron pickaxe with efficiency 2, that's some good trades because you've gone through alot of danger through the quartz tower.