<P> The Hilton Palacio del Rio is a 500 - room , 21 - story hotel in San Antonio , Texas that opened in 1968 . The hotel was constructed for the 1968 World 's Fair , HemisFair ' 68 and was designed by Cerna & Garza Architects . The structure is notable for being a milestone in the use of Modular building construction techniques . </P>
<P> The Hilton Palacio del Rio is a 500 - room , 21 - story hotel in San Antonio , Texas that opened in 1968 . The hotel was constructed for the 1968 World 's Fair , HemisFair ' 68 and was designed by Cerna & Garza Architects . The structure is notable for being a milestone in the use of Modular building construction techniques . </P>
how many rooms does the hilton palacio del rio have
how many rooms does the hilton palacio del rio have
500
500