London

Here's a suggested itinerary for 7 days in London, taking into account your constraints:

Day 1: Arrival and Sightseeing

• Arrive in London and check into your hotel.
• Start your sightseeing with a visit to the iconic Tower Bridge and Tower of London. You can take a guided tour to learn about the history of these landmarks.
• Afterward, head to the nearby Borough Market for lunch. This bustling market is filled with food stalls selling everything from fresh produce to international cuisine.
• In the afternoon, take a stroll along the South Bank of the River Thames. You'll pass by famous landmarks such as Shakespeare's Globe Theatre, the Tate Modern art museum, and the London Eye.

Day 2: Royal London

• Start your day with a visit to Buckingham Palace to see the Changing of the Guard ceremony. This is a quintessential London experience that you won't want to miss.
• Afterward, head to Westminster Abbey to see where many British monarchs have been crowned and buried. You can also see the graves of famous figures such as Isaac Newton and Charles Darwin.
• In the afternoon, visit the Houses of Parliament and Big Ben. You can take a guided tour of the building or simply admire the architecture from the outside.

Day 3: Museums and Galleries

• Spend the morning at the British Museum, which houses an incredible collection of artifacts from around the world. Highlights include the Rosetta Stone and the Elgin Marbles.
• Afterward, head to the National Gallery to see works by famous artists such as Van Gogh, Monet, and Botticelli.
• In the evening, catch a show in London's West End theater district. There are plenty of family-friendly options to choose from, including The Lion King and Matilda.

Day 4: Greenwich

• Take a boat ride down the River Thames to Greenwich, a charming neighborhood on the outskirts of London.
• Visit the Royal Observatory to see the Prime Meridian, which marks the dividing line between the Eastern and Western hemispheres.
• Afterward, explore the historic Greenwich Market, which is filled with food stalls, artisanal crafts, and vintage clothing.
• In the evening, head back to central London for dinner at one of the city's many restaurants.

Day 5: Harry Potter and Shopping

• Start your day with a visit to the Warner Bros. Studio Tour London - The Making of Harry Potter. This behind-the-scenes tour takes you through the sets, costumes, and props used in the Harry Potter films.
• Afterward, head to Oxford Street for some shopping. This famous shopping district is home to flagship stores for many popular brands.
• In the evening, take a stroll through Covent Garden, a lively area filled with street performers, shops, and restaurants.

Day 6: Parks and Palaces

• Spend the morning at Hyde Park, one of London's largest and most beautiful parks. You can rent a boat on the Serpentine lake or simply relax on the grass.
• Afterward, head to Kensington Palace to see where Queen Victoria was born and Princess Diana lived. You can also explore the palace gardens, which are free to enter.
• In the afternoon, visit the Victoria and Albert Museum, which houses an incredible collection of art and design objects from around the world.

Day 7: Markets and Food

• Spend your last day in London exploring some of the city's best markets. Start with Portobello Road Market, which is known for its antiques and vintage clothing.
• Afterward, head to Camden Market, a vibrant market filled with food stalls, clothing, and crafts.
• In the evening, have dinner at one of London's many excellent restaurants. Some popular options include Dishoom (Indian cuisine), Hawksmoor (steak), and St. John (British cuisine).

I hope this itinerary gives you a good idea of what to do during your 7 days in London! Let me know if you have any questions or need further assistance.