Paris, the City of Light, is a perfect start for your family trip with its iconic landmarks like the Eiffel Tower and Louvre Museum, and charming neighborhoods to explore. It's a great place for family-friendly sightseeing and cultural experiences that will captivate both adults and your 10-year-old. Enjoy budget-friendly activities like picnics in beautiful parks and free walking tours to make the most of your stay.

Lyon is a fantastic city to visit, especially since you have a friend to stay with there from July 17 to 21. It's known for its rich history, beautiful old town, and amazing cuisine — perfect for family bonding and sightseeing. Staying with a local friend will give you a unique, authentic experience of the city beyond the usual tourist spots.

Lauterbrunnen is a stunning Swiss village nestled in a valley surrounded by dramatic cliffs and waterfalls, making it a perfect spot for family-friendly outdoor adventures and breathtaking sightseeing. It's an ideal base for exploring the Swiss Alps, with easy access to hiking trails, cable cars, and nearby mountain villages. Staying here for at least two nights will give you a chance to soak in the natural beauty and tranquility of the area, a memorable experience for both adults and kids.

Interlaken is a stunning town nestled between two beautiful lakes, Thun and Brienz, making it a perfect base for exploring the Swiss Alps. It's famous for its breathtaking mountain views, outdoor activities like hiking and boat rides, and proximity to Lauterbrunnen, which you plan to visit for at least two nights. The town offers a charming mix of nature and adventure, ideal for family bonding and sightseeing on a budget.

Zurich is a vibrant city known for its beautiful old town, scenic lake views, and family-friendly attractions. It's a great gateway to explore Switzerland's natural beauty and offers budget-friendly public transportation options. Perfect for a family looking to enjoy both urban and outdoor experiences.