for the pivot mechanism used for draught animals see whippletree mechanism . doubletree by hilton industry hotel founded january 1969 ; 47 years ago 1969 01 scottsdale arizona u.s. headquarters mclean virginia u.s. number of locations 442 area served worldwide parent hilton worldwide website www.doubletree.com doubletree by hilton is an american hotel chain and a part of hilton worldwide . most doubletree hotels are independently owned and operated by franchisees but some are owned and or managed by hilton worldwide . 1 contents 1 history 2 gallery 3 references 4 external links history edit the first doubletree hotel opened in scottsdale arizona in 1969 . 2 the doubletree corporation merged with promus hotel corporation in december 1997 bringing together the doubletree red lion hampton inn and embassy suites brands . 3 in december 1999 hilton hotels corporation acquired promus hotel corporation which brought doubletree hotels and other promus hotel brands under the umbrella of the newly renamed hilton worldwide . 4 in early 2011 hilton worldwide launched a logo and name rebranding for the chain replacing the name doubletree with doubletree by hilton . 5 doubletree s strategy to grow the brand has been to convince operators of other brands to switch flags . this is in contrast to brands like marriott or sheraton which rely on new construction to grow their footprint . doubletree also provides lower cost options to improve properties which help operators remain in the brand system . 6 gallery edit a doubletree hotel in denver stone town zanzibar hotel suite ohio references edit doubletree . world franchising . accessed october 2013 . doubletree by hilton . entrepreneur . accessed december 2014 . promus and doubletree hotel companies will merge . the new york times . accessed december 2014 . hilton to buy promus chain creating one of biggest hotel groups . the new york times . accessed december 2014 . doubletree by hilton introduces new global brand identity creating one of biggest hotel groups . business wire . accessed december 2014 . karmin craig . hotel operators ready to rumble over upgrades . wall street journal . issn 0099 9660 . retrieved 2015 10 23 . external links edit wikimedia commons has media related to doubletree . doubletree by hilton official site v t e hilton worldwide luxury conrad hotels & resorts curio collection waldorf astoria hotels & resorts full service doubletree by hilton embassy suites hotels hilton hotels & resorts focused service hampton inn hilton garden inn home2 suites by hilton homewood suites by hilton tru by hilton vacation ownership hilton grand vacations company loyalty program hilton hhonors former divisions caesars entertainment carte blanche card coral by hilton denizen hotels scandic hotels v t e hotel chains accor adagio formule 1 f1 formula 1 ibis budget styles mama shelter mercure grand mercure mgallery novotel suite novotel pullman the sebel sofitel thalassa sea & spa carlson rezidor country 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