Make your way to the meeting point in the city Tours, France; the Tourist Office located at 78 rue Bernard Palissy. Departure time is 9:30am. Meet your guide and small group of 8 people or fewer, then climb into an air-conditioned tour vehicle and depart for the Loire Valley.
Arrive at Chenonceau, where your group with get skip-the-line access and embark on a tour of the chateau's stunning architecture. Stroll through the Renaissance-style gardens surrounding the castle and learn about its history and relationship to famous women such as Catherine de Medici.
Descend into a cellar cave, dating from 1874, to have a guided tasting of mature Vouvray wines before continuing to a local restaurant for a traditional French meal.
Following lunch, enjoy priority, skip-the-line access to the Royal Castle of Amboise, an example of the transition of Gothic to Renaissance architecture. Learn the history of the castle on your guided tour, and stop by to see the grave of Leonardo da Vinci in the chapel.
The day's final tour is at the Chateau of the Clos Lucé, where da Vinci spent the final years of his life. See models of some of his genius machines in the invention room. Depart the last chateau and head back to Tours for a 6pm drop-off.