Inside the presidential guest house - the 'world's most exclusive hotel' that's bigger than the White House

The White House may be the most famous building along Pennsylvania Avenue in Washington, DC, but there's another, lesser-known government residence next-door that has played its own role in US history.

The Blair House, located just steps away from the north lawn of the White House, is the official presidential guest house.

Since World War II, it has acted as the "world's most exclusive hotel", hosting heads of state, royalty, and presidents-elect.

While the White House remains the main meeting location for US presidents and their foreign visitors, the guest house carries unique significance for the role it has played in American diplomacy for decades.

Take a look inside Blair House: