For our shoot, we borrowed the keys to a three-bedroom, three-and-a-half bathroom penthouse — yours for a mere $9.75 million — at 241 Fifth, a new condo building from the CORE Group, in New York City’s up-and-coming NoMad neighborhood. Designed by ODA Architecture, the apartment features 11-foot ceilings and a rooftop terrace with a separate kitchen and a hot tub.