The Penthouse at The Schumacher in Manhattan's vibrant NoHo neighborhood has hit the market for $15 million, listed by John Burger and Richard Ziegelasch of Brown Harris Stevens. The building, an art gallery itself with a Basquiat in the lobby and Urs Fisher sculpture in the courtyard, is a certified Billionaire's Club, where Alberto "Tico" Magrabi, owner of the world's largest Warhol collection lives.