Fodor's Expert Review Moët & Chandon

Founded by Charles Moët in 1743, the world's largest Champagne producer is a must-see if you're in the region. Foreign royalty from Czar Alexandre I and Emperor Napoléon I to Queen Elizabeth II have visited these prestigious chalk-cellar galleries, which run for a mind-blowing 27 km (17 miles). During the tour, which lasts over an hour and takes place on foot, a savvy guide explains in detail the Champagne-making process. There are three sommelier-guided tasting choices, with the high-end option including a glass of Grand Vintage and Grand Vintage Rosé. Reserve a visit online.