France and Italy are both home to some stunningly clear lakes. Here are nine of the clearest lakes in these two countries:

In France:

1. Lake Annecy (Lac d'Annecy): Located in the French Alps, Lake Annecy is often referred to as the "Pearl of the French Alps." It is known for its crystal-clear waters and is a popular destination for swimming, boating, and water sports.

2. Lake Geneva (Lac Léman): While Lake Geneva is shared with Switzerland, a significant portion of it is in France. It is one of the largest lakes in Western Europe and boasts clear waters surrounded by picturesque landscapes.

3. Lake Bourget (Lac du Bourget): Situated in the Savoie region, Lake Bourget is the largest natural lake in France. It is known for its pristine waters and is a great spot for swimming and sailing.

4. Lake Serre-Ponçon: This man-made lake in the French Alps was created by damming the Durance River. The clear blue waters of Lake Serre-Ponçon make it a popular destination for water-based activities.

5. Lake Salagou (Lac du Salagou): Located in the Hérault department of southern France, Lake Salagou is known for its unique red soil and clear waters. It's a great place for swimming and hiking.

In Italy:

1. Lake Garda (Lago di Garda): Lake Garda is the largest lake in Italy and is renowned for its clear, turquoise waters. It's a popular destination for sailing, windsurfing, and swimming.

2. Lake Como (Lago di Como): Lake Como is famous for its stunning scenery and clear waters. It is surrounded by charming towns and is a popular spot for boating and relaxation.

3. Lake Maggiore (Lago Maggiore): Located in northern Italy and partially in Switzerland, Lake Maggiore is known for its crystal-clear waters and the Borromean Islands that dot its surface.

4. Lake Iseo (Lago d'Iseo): Lake Iseo is one of the lesser-known lakes in northern Italy, but it offers clear waters and a tranquil atmosphere. Monte Isola, the largest lake island in Italy, is a popular destination on the lake.

These lakes in France and Italy offer not only clear waters but also stunning natural beauty, making them excellent destinations for both relaxation and outdoor activities. Remember that water clarity can vary depending on factors such as weather and seasonal conditions, so the clarity of these lakes may change at different times of the year.