A four-level "quadplex" penthouse located in the skinniest skyscraper on Manhattan 's Billionaires Row just hit the market ...

The best hotels in Florence make it easy to take in historic architecture, museums and galleries. Here's where to stay in ...

The apartment atop 111 West 57th Street on Billionaire's Row occupies the 80th to 83rd floors of what's been dubbed the ...

A South Florida real estate firm is offering a once-in-a-lifetime opportunity to own a piece of the sky in Dubai's Burj Khalifa. Find out what makes this listing so extraordinary.

A triplex penthouse by architect Tony Ingrao lists for $17.9 million in N.Y.C.'s Soho with a great room, two primary suites, ...

The downtown penthouse offers 15-foot ceilings, two elevators, floor-to-ceiling glass walls and an undulating terrace ...

Now’s the perfect time for someone to buy this standout 108 Leonard penthouse — one that’s housed inside a historic, and ...