9 / 12

Sky mansion

(Photo by Evan Joseph/Prudential Douglas Elliman)

NYC's 'Mansion in the sky'

This three-floor, 11,000-square-foot

penthouse is perched on Manhattan’s skyline and atop New York’s CitySpire. The

trophy penthouse comes with stunning views of the Big Apple and a $100 million

price tag, making it “the most expensive apartment in the country,” according

to The New York Daily News. The home’s

exclusive listing is held by Raphael De Niro, the son of actor Robert De Niro.