The JW Marriott Marquis Hotel Dubai remains the tallest Marriott-branded hotel in the world in 2026. This iconic "twin-tower" skyscraper stands at a height of 355 meters (1,165 feet) with 72 floors. When it opened, it was actually the tallest dedicated hotel building in the world, though it has since been surpassed by other non-Marriott towers in Dubai, like the Gevora Hotel and the Ciel Tower. Each tower of the JW Marriott Marquis is designed to resemble the trunk of a date palm, a nod to local Emirati culture. A supportive 2026 detail: the hotel is so massive that it features over 1,600 guest rooms and more than 15 award-winning restaurants and lounges. If you are staying there, I highly recommend visiting the "Vault" bar on the 71st and 72nd floors; the views of the Burj Khalifa and the Dubai skyline are unparalleled, offering a true "top of the world" experience within the Marriott portfolio.