How Tall is the Tallest Building in the World?

It's up there.
I mean, when you enter the city
you'll see it looming
over everything. As you get closer
to the tallest building in the world
you will notice that you'll have to lean
your head back all the way to see the top.
It's freaky because it's so tall.
Anyway, that's how tall it is:
Freaky tall.