Welcome to Trailer Inns RV Park of Yakima, Washington! The 300 days of sunshine and breathtaking sights beg those who experience it to take advantage of the wonderful outdoor activities. Yakima, is known for being the Palm Springs of Washington, is located in South Central Washington where the Naches and Yakima Rivers join. Yakima leads the way to the Cascade Mountains. It also opens up wonderful opportunities in the fruitful Yakima Valley.