Crestline is a laidback resort community in the rugged San Bernardino mountains within a 90-minute drive of Los Angeles. Situated at an elevation of more than 4,600 feet (1,400 meters), the village experiences four distinct seasons and, with year-round temperatures much colder than the towns and cities down the mountain, attracts cool climate-seeking crowds from the urban centers of Southern California.

After Mormon wagons brought settlers to the crest of the mountain, the area turned into a summer colony "far above the heat of the Valley" and became a vacation camp in 1917 for the employees of the Pacific Electric Company. A decade later, the forested slopes of Crestline gave way to clusters of homes built by early settlers from the Los Angeles area. Today, Crestline is the gateway to the San Bernardino National Forest and a starting point for RV rentals in Crestline to find adventures beyond.