Hyatt was founded by Jay Pritzker in 1957 when he purchased the Hyatt House motel adjacent to the Los Angeles International Airport. In 2004, substantially all of the hospitality assets owned by Pritzker family business interests, including Hyatt Corporation and Hyatt International Corporation, were consolidated under a single entity whose name was subsequently changed to Global Hyatt Corporation. On June 30, 2009, Global Hyatt Corporation changed its name to Hyatt Hotels Corporation. We completed our initial public offering of our Class A common stock on November 10, 2009.
Hyatt Hotels Corporation is a global hospitality company with widely recognized, industry leading brands and a tradition of innovation developed over our sixty-year history. We develop, own, operate, manage, franchise, license, or provide services to a portfolio of properties, consisting of full service hotels, select service hotels, resorts, and other properties, including branded spas and fitness studios, timeshare, fractional, and other forms of residential, vacation, and condominium ownership units. At December 31, 2018, our worldwide hotel portfolio consisted of 843 hotels (208,207 rooms). See Part II, Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations-Overview" for a categorized breakdown of our portfolio.
Our full service properties operate under seven brands: Park Hyatt, Grand Hyatt, Hyatt Regency, Hyatt, Andaz, Hyatt Centric, and The Unbound Collection by Hyatt. Additionally, in 2018, we acquired Two Roads Hospitality LLC ("Two Roads") and added five brands to our portfolio - Alila, Destination, Thompson, Joie de Vivre, and tommie. In 2017, we acquired Miraval Group ("Miraval") and Exhale Enterprises, Inc. ("Exhale"), forming a distinct wellness category within our portfolio of brands. Our two select service brands are Hyatt Place and Hyatt House. Our all-inclusive resort brands are Hyatt Ziva and Hyatt Zilara. We also manage, provide services to, or license our trademarks with respect to residential ownership units that are often adjacent to a Hyatt-branded full service hotel. Additionally, for condominium ownership units, we provide services and/or manage the rental programs or homeowner associations associated with such units. We consult with third parties in the design and development of such mixed-use projects. We license certain of our trademarks with respect to vacation ownership units, which are part of Hyatt Residence Club.