London

Absolutely, I'd love to help you plan an exciting 4-day itinerary in London that includes parks and green spaces, caters to a fast pace, and is family-friendly!

Day 1:

Start your day with a visit to Hyde Park, one of London's most famous green spaces. Enjoy a leisurely stroll around the Serpentine Lake or rent a rowboat for a fun family activity. Next, head to the iconic Buckingham Palace to watch the Changing of the Guard ceremony. Afterward, explore the nearby St. James's Park, where you can spot ducks, pelicans, and enjoy beautiful flower beds. End the day with a visit to the bustling Covent Garden for street performances and shopping.

Day 2:

Begin your day at the picturesque Regent's Park, home to the London Zoo and stunning rose gardens. Take a walk through the park and enjoy the views from Primrose Hill. Next, head to the British Museum, where you can explore ancient artifacts and mummies. In the afternoon, visit the vibrant Camden Market for unique shopping and street food stalls.

Day 3:

Start your day at Greenwich Park, offering panoramic views of London and the Royal Observatory. Explore the park's deer enclosure and visit the Maritime Museum. Take a boat ride on the Thames River to the Tower of London, where you can see the Crown Jewels and learn about the city's history. End the day with a visit to the Tower Bridge and enjoy the views from the glass walkway.

Day 4:

Begin your final day with a visit to Kew Gardens, a UNESCO World Heritage Site known for its botanical collections and glasshouses. Explore the treetop walkway and visit the Palm House. Next, head to the South Bank, where you can stroll along the Thames River and visit the London Eye for panoramic views of the city. End your trip with a visit to the vibrant Borough Market for delicious food and unique souvenirs.

I hope this itinerary gives you a good balance of green spaces, attractions, and family-friendly activities while keeping up with your fast pace of travel. Enjoy your time in London!