There are several rental shops in Amboise, where you can rent regular or tandem bicycles for a memorable and scenic tour of the area.  Information on routes and bike shops can be obtained from the Tourist Information Office in the centre of town.  The routes can be customized to include stops at one of the many castles or wineries in the area.  Although following designated bike trails may limit some of these choices, the trails are much safer and mostly flat, making them suitable for everyone and still offering plenty of good choices.  Bicylce rentals are in the 15 to 20 Euro range for one day and tandem bikes cost around 35 Euros.