Los Alcázares is a municipality and a coastal spa town and former fishing village on the western side of the Mar Menor in the autonomous community and province of Murcia, southeastern Spain.
The Mar Menor belongs to three other municipalities: San Javier, San Pedro del Pinatar and Cartagena and is Europe's largest saltwater lagoon. Connected to the adjacent Mediterranean sea by several channels, the Mar Menor has a surface area of almost 20 km2 and the fact that it is typically 2-4 degrees warmer than the Mediterranean, makes it a very popular destination for sailing, windsurfing, kiteboarding and other water sports enthusiasts.
Los Alcazares has a resident population of 15,674 which rises to over 100,000 during the peak tourist summer holiday season.
Wikipedia https://en.wikipedia.org/wiki/Los_Alcázares
Coordinates 37°44'17.893" N -0°51'2.624" E