Pan American World Airways opened the first InterContinental hotel back in 1946, making it the world's oldest international hotel brand. Celebrities and dignitaries such as Ava Gardener, Louis Armstrong, President Ronald Reagan and Britain's Prince William have all been guests of InterContinental hotels. Because InterContinental properties (there are more than 170 of them across more than 60 countries) are individually owned, each exhibits its own distinct personality reflective of its location. What's more, many InterContinental hotels — such as The Willard InterContinental in Washington, D.C. and the InterContinental London Westminster — are housed in historically significant buildings, which only adds to the ambiance. However, every InterContinental hotel adheres to the brand's standards, touting high-end amenities and fine dining establishments. Guests who frequently stay with InterContinental properties can sign up to earn free stays, transportation discounts and even guided tours through the IHG Rewards Club program. Many InterContinental properties have earned spots on our Best Hotels in the USA, Best Hotels in the Caribbean, Best Hotels in Mexico and Best Hotels in Canada rankings. U.S. News-ranked InterContinental properties are listed below.