El Paso Texas-City In The Sun. El Paso is located in an ancient mountain pass surrounded by mile-high mountains from which the name is derived. El Paso is Texas westernmost city. Today it is a modern moutains metropolis with superb climate scenery and proximity to Mexico"s largest border city Juarez. For the visitor to El Paso there is plenty to see and do. You may hike through the rustic trails in Franklin Mountains State park, cool off at Wet and Wild World in nearby Anthony or discover centuries.old missions right in the heart of Sun Country.