Puerto Vallarta is a Mexican resort city situated on the Pacific Ocean's Bahía de Banderas. The 2005 census reported Puerto Vallarta's population as 177,830 making it the fifth-largest city in the Mexican state of Jalisco.

Puerto Vallarta is named after Ignacio Vallarta, a former governor of the state of Jalisco. "Puerto Vallarta" is often shortened to "Vallarta." and English (language) speakers call the city P.V. for short. In internet shorthand the city is often referred to as PVR, after the code for its international airport. English speakers sometimes misspell or mispronounce the city's name as "Porto Vallarta".

Source: http://en.wikipedia.org/wiki/Puerto_Vallarta