Yellowstone's Old Faithful Inn, a century-old national treasure, is a landmark of park architecture. Built from 10,000 uniquely shaped trees, it was once advertised as the world's largest log cabin. The inn, which has hosted presidents and royalty, has survived numerous challenges. Its unique design, featuring cleverly hidden wiring, inspired other grand lodges across the nation, solidifying its place as a pioneering example of national park lodging. Rooms are pricey, averaging $250/night, and require sharing bathrooms.

Prepared by Emily Rhodes and reviewed by editorial team.