Take a tour of the swankiest new building in New York City's Financial District

Fifteen years after the terrorist attacks of 9/11, downtown New York City is making a serious comeback.

With One World Trade Center as the construction epicenter, development in the neighborhood has soared. Among the projects is the Brookfield Place shopping center, with high-end retail offerings like Burberry and Michael Kors, an Equinox gym, and restaurants like Amada and the stalls of Hudson Eats. The $4 billion World Trade Center Transportation Hub - more commonly known as the Oculus - also doubles as a Westfield shopping center.

Reaching high above them is 30 Park Place, a luxury condo development built by Silverstein Properties and Robert A.M. Stern Architects to contribute to the revival of the area. It's attached to the new Four Seasons Hotel New York Downtown, which occupies the bottom third of the building.

"All around us, downtown has become a model of what is best and most exciting about New York," Larry Silverstein, chairman of Silverstein Properties, said to Business Insider. "Since 2001, the population has tripled, and we are now one of the city's most desirable places to live and raise a family."

Business Insider had the chance to explore a 78th-floor duplex penthouse that was staged by interior designer Robert Couturier. The nearly 6,000-square-foot unit is on the market for $29.5 million, but that doesn't include the furnishings you'll see here.

Let's take a look.