The 4,600-square-foot unit is located on the 29th floor of The Waterview, offering views to the north, south and east, and is listed for $6.95 million.

The most outstanding feature is the iconic view of Washington, D.C.," said co-listing broker Robert Hryniewicki, who worked with Adam Rackliffe, Christopher Leary and Maika Leary of HRL Partners, a boutique real estate firm in Washington. Leary, and Micah Smith, who co-listed the property.

From Georgetown University, you have a 270-degree view east over the Kennedy Centre, the Washington and Jefferson Memorials, the Capitol Building, and Reagan National Airport. These are some of the best views of D.C. There is no better view.

According to the Washington Business Journal, this extraordinary home was custom-built in 2008 for Ralph Shrader, chairman of Booz Allen Consulting.

In Washington, D.C., having a 2,000-square-foot flat is considered large, so having a penthouse of this size is really a limited offering," Hryniewicki notes. There are also building height restrictions in D.C., so this 29th-floor unit also has some of the best views of the city. It sits on the banks of the Potomac River, so no one has a view of D.C. like it."

The amenities of this full-service building are also very inviting. A front desk, valet parking, room service, restaurant, fitness centre and hotel are located on the lower level of the building.

Three parking spaces in the underground garage and additional storage space are also included in the sale.