London

Here's a suggested itinerary for 10 days in London that's family-friendly:

Day 1: Arrival and Exploration

• Arrive in London and check into your hotel
• Take a stroll around the city center and explore the area around your hotel
• Visit the British Museum, which is free and has a great collection of artifacts from around the world

Day 2: Tower of London and River Thames

• Start your day at the Tower of London, where you can see the Crown Jewels and learn about the history of the city
• Take a boat ride on the River Thames and enjoy the views of the city from the water
• Visit the Tower Bridge Exhibition and walk across the famous bridge

Day 3: Buckingham Palace and Hyde Park

• Watch the Changing of the Guard ceremony at Buckingham Palace
• Take a stroll through Hyde Park and visit the Diana Memorial Fountain
• Visit the Natural History Museum, which has a great collection of dinosaur skeletons and other exhibits that kids will love

Day 4: Harry Potter and West End

• Take a Harry Potter walking tour and see some of the filming locations from the movies
• Visit the Warner Bros. Studio Tour London - The Making of Harry Potter
• Catch a show in London's West End, which has a great selection of family-friendly musicals and plays

Day 5: London Eye and South Bank

• Take a ride on the London Eye and enjoy the views of the city from above
• Visit the SEA LIFE London Aquarium, which has a great collection of marine life
• Take a stroll along the South Bank and enjoy the street performers and food stalls

Day 6: Greenwich and Cutty Sark

• Take a boat ride to Greenwich and visit the Royal Observatory, where you can stand on the Prime Meridian
• Visit the Cutty Sark, a historic sailing ship that's now a museum
• Take a stroll through Greenwich Park and enjoy the views of the city from the hilltop

Day 7: Camden Market and Regent's Park

• Visit Camden Market, which has a great selection of food stalls and unique shops
• Take a stroll through Regent's Park and visit the London Zoo, which has a great collection of animals from around the world
• Visit the Sherlock Holmes Museum, which is a fun and interactive museum that's great for families

Day 8: Tate Modern and Shakespeare's Globe

• Visit the Tate Modern, which has a great collection of modern and contemporary art
• Take a tour of Shakespeare's Globe and learn about the history of the theater
• Visit the Borough Market, which has a great selection of food stalls and artisanal products

Day 9: Kew Gardens and Richmond Park

• Visit Kew Gardens, which has a great collection of plants and flowers from around the world
• Take a stroll through Richmond Park and see the deer that roam freely in the park
• Visit the Hampton Court Palace, which has a great collection of art and history

Day 10: Departure

• Depart from London and head back home, or continue your travels elsewhere in the UK or Europe

I hope this itinerary helps you plan your trip to London! Let me know if you have any questions or need any further assistance.