You're The Top

What must it be like to live up here? Pay $15.9-million and you too can rule New York City from high atop 170 Fifth Ave. "Penthouses are the creme de la creme of the condominium market -- and often, the most expensive," the Wall Street Journal's suave real estate senior editor Lauren Baier Kim writes today. "Situated at the top of a building, these homes frequently have expansive views, large amounts of living space and the latest and greatest in terms of amenities."