Start your explorations of Chamonix Mont Blanc by taking a leisurely stroll around the charming town centre. Visit the Église Saint-Michel, an impressive Baroque church that overlooks the square. Walk around and explore the shops before taking the Chamonix's rack railway to the Montenvers, enjoying the breathtaking scenery and take in views of the famous Mer de Glace glacier. Afterwards, continue on to one of Chamonix's legendary mountain restaurants, La Cabane des Praz, to taste authentic alpine cuisine.
Take a cable car from the centre of Chamonix and ascend to the top of Aiguille du Midi - the highest peak in Europe. Take in the view of the snow-capped mountains and glaciers while having lunch at the panoramic 3842m terrace. You can also visit the Mont Blanc Tunnel, the highest road tunnel in the world. Shop for some gifts at Chamonix's local stores before enjoying a pot of fondue in one of the nearby alpine restaurants.
Spend the day exploring the cultural side of Chamonix by walking through the streets and visiting the Musée Alpin for a view of the local culture. Next, stop by the Chamonix Alpine Museum to learn about the town's mountaineering history. If you have enough time, visit the Maison de la Mémoire et du Patrimoine to get an insight into the region's history, language, and culture. In the evening, dine at a traditional restaurant and enjoy live music and dance performances.
If you have more time, consider taking a day trip to the nearby French town of Annecy to view its picturesque lake and explore the local markets. If you have less time, consider either choosing between Day 1 and Day 3 or Day 2 and Day 3. Remember to dress warmly as it can get chilly in the mountains, and it's advised to plan your journey around the pass availability and opening and closing times of the cable cars or railways.