Fodor's Expert Review Old Faithful Inn

It's hard to imagine how any work could be accomplished with snow and ice blanketing the region, but this truly iconic hotel was constructed over the course of a single winter. Completed in 1904, what's believed to be the world's largest log structure is one of the most recognizable, and impressive, buildings in the national park system. Even if you don't spend the night, walk through or take the free 45-minute guided tour to admire its massive open-beam lobby and rock fireplace. There are antique writing desks on the second-floor balcony. You can watch Old Faithful geyser from two second-floor decks.