Fodor's Expert Review Lake Shasta Caverns National Natural Landmark

Stalagmites, stalactites, flowstone deposits, and crystals entice visitors to the Lake Shasta Caverns. To see this impressive spectacle, you must take the two-hour tour, which includes a catamaran ride across the McCloud arm of Lake Shasta and a bus ride up North Grey Rocks Mountain to the cavern entrance. The temperature in the caverns is 58°F year-round, making them a cool retreat on a hot summer day. The most awe-inspiring of the limestone rock formations is the glistening Cathedral Room, which appears to be gilded. In summer it's wise to purchase tickets online a day or more ahead of your visit.