With an annual rainfall ranging from 140 to 170 inches, the Hoh Rain Forest is a lush, green wonderland, with mosses and ferns covering every tree and surface. According to the NPS, it is one of the finest remaining examples of temperate rainforest in the United States and is one of the park's most popular spots to visit. One visitor described walking in the forest as a "Hansel and Gretel-type of feeling" while another likened it to a fairy tale enchanted forest.

Most travelers begin at the Hoh Rain Forest Visitor Center, which is staffed with rangers who can offer advice on what to see and do. The visitor center also houses exhibits and a bookstore. Two short nature trails loop through the forest near the center, the Hall of Mosses Trail (.8 miles) and the Spruce Nature Trail (1.2 miles). If you're up to the challenge, there is also a 17-mile trail that leads to Glacier Meadows, on the shoulder of Mount Olympus, called the Hoh River Trail.