高層マンション.
a large-scale high-rise building, called a {mammoth apartment}
a building which is both {expensive} and stately
a six-storied building
a building with a floor that is raised high above the ground
the top of a tall building
a very tall building with many stories
a building that has been built on a high, level piece of ground
高層建築.
I want to live in a top floor of a high-rise apartment.