Cavern Grotto, Arizona
The Cavern Grotto is a newly opened restaurant located more than 200 feet underground in the Grand Canyon. As many as 16 diners can sit down at four tables on a dining platform that overlooks a 345-million-year-old cavern system for an all-you-can-eat lunch or dinner. Meals have time limits (90 minutes for lunch, two hours for dinner) to prevent groups from lingering too long in the fascinating setting.
The restaurant is connected to the Grand Canyon Caverns on historic Route 66, which operates tours of the cavern system via an elevator that travels 21 stories from the inn to the underground attractions. But don't worry. The dining platform isn't on the tour, so fanny pack-wearing tourists won't be snapping pics of you while you dine. A tour is included with your meal.