For those, who are thinking about luxury forms of living in a Residential Tower, we´d like to strongly suggest (as heard in the lecture Baukonstruktion II by Prof. Fink) that you take a look at the New York Apartment Houses of Rosario Candela and James Carpenter. This example was finished in 1927 in 812 Park Avenue, New York. The building comprises large duplex units on the typical floors, with triplex penthouse units.