American Express is opening a Centurion Lounge at London Heathrow Airport next year, though an exact date has not been set. The 7,000-square-foot lounge will be nestled past security in Terminal 3. According to American Express, it will be inspired by London's blend of modernity and history. In 2020, American Express will also open a 13,000-square-foot lounge at Charlotte Douglas International Airport. The Centurion Lounge in North Carolina will be one of its biggest in American Express' Centurion Lounge network.

Centurion Lounges have grown in popularity as travelers want to relax in comfort before getting on a long fight. The first lounge opened in Las Vegas in 2013, and the company has been opening new locations since. There are a total of nine lounges open and five more in the works, including the locations at London Heathrow and Charlotte Douglas. The London lounge will only be the second outside of the United States. The other non-US location is in Hong Kong.

Guests will get the chance to enjoy premium facilities and services that are to be expected at a Centurion Lounge. Complimentary food and drinks, speedy Wi-Fi, private workstations and even showers will be offered at the lounge.

American Express recently said that the company would be expanding their current lounges and building new ones in the future. In addition to the new locations in London and North Carolina, American Express is also currently in the process of building lounges at New York JFK, Los Angeles International Airport and Denver International Airport. All three should open in 2019.

The Centurion Lounge offers the advantage of not being connected to any particular airline or frequent flyer program. Those looking to enter the lounge must be an American Express Platinum Cardmember or Centurion Member. Platinum cardholders can bring two guests in free of charge, while Centurion Members can bring their immediate family or two people free of charge.

Adam Luehrs is a contributing writer at GET.com based in California. He likes traveling to new and exciting destinations, preferably on his credit card company's dime. When not on the road, Adam enjoys hiking around the mountains of San Diego, trying out new food and reading history books. Email: adam.luehrs@get.com.