The tallest residential building in NYC just listed its first condos, and the priciest is a $63 million unit on the 112th floor. Here's what the Billionaires' Row tower will look like when it's finished in 2020.

In wealthy cities around the world, from New York to London to Los Angeles, a certain ritzy neighborhood or street is being given an extravagant nickname: Billionaires' Row, which refers to a part of the city where some of the richest people live in ultra-expensive homes.

Central Park Tower's neighboring buildings have sold multimillion dollar condos to high-profile buyers including Dell Technologies founder Michael Dell, Chinese billionaire Liu Yiqian, and billionaire Ken Griffin, who broke the record for the most expensive home ever sold in the US when he bought a $238 million penthouse at 220 Central Park South.

The tower was designed by Adrian Smith + Gordon Gill Architecture (AS+GG), with interiors by Rottet Studio.

The first seven condos available in Central Park Tower today include a two-bedroom for $6.9 million, a three-bedroom for $18.8 million, a four-bedroom for $33.38 million, and a five-bedroom on the 112th floor for $63 million.

The living spaces are placed in the corners of the residences to maximize the views of the city and Central Park, according to the developer.

The residences start on the 32nd floor and are outfitted with floor-to-ceiling windows.

The private club will offer 50,000 square feet of luxury amenities spread across three floors, including a 14th-floor terrace with a 60-foot swimming pool, a sundeck and cabanas, and poolside food and drink service.

The wellness amenities include an indoor pool, a spa offering massages, facials, and body treatments, and a fitness center with private swimming classes, coaches, and personal training services.

In addition to the lavish amenities available to residents and club members, Central Park Tower will house a new 320,000-square-foot, seven-story Nordstrom New York flagship store.