The Hotel Riviera del Pacífico was a hotel located in Ensenada, Baja California, Mexico. It was one of the most prestigious and luxurious hotels in Mexico. It opened in 1930.

The Margarita is claimed to have been invented in several different places and at several different times. One claim is that it was invented at the Hotel Riviera del Pacífico for Marjorie King Plant at the time when she was the joint owner. Other versions refer to Marjorie King, an actress, and some move the location from Ensenada to Tijuana. Margarita is a Spanish version of the name Marjorie.
(Wikipedia)