London

Here's an ideal itinerary for 3 days in London, taking into account your cruise schedule:

Day 1:

• Morning: Start your day with a visit to the iconic Tower of London. This historic castle has served as a royal palace, prison, and even a zoo over the centuries. Be sure to see the Crown Jewels and take a guided tour with one of the Yeoman Warders (also known as Beefeaters).
• Afternoon: After lunch, head to the nearby Tower Bridge and take a walk across its glass floor for stunning views of the River Thames. You can also visit the Tower Bridge Exhibition to learn more about the bridge's history and engineering.
• Evening: End your day with a visit to the West End, London's famous theater district. Catch a show at one of the many theaters, or simply stroll around and take in the lively atmosphere.

Day 2:

• Morning: Start your day with a visit to the British Museum, one of the world's greatest collections of art and artifacts. Highlights include the Rosetta Stone, the Elgin Marbles, and the Egyptian mummies.
• Afternoon: After lunch, head to Covent Garden, a bustling shopping and entertainment district. Browse the shops and street performers, and be sure to visit the covered market for unique souvenirs.
• Evening: For dinner, head to one of London's many excellent restaurants. You might try a traditional pub meal, or opt for something more upscale like a Michelin-starred restaurant.

Day 3:

• Morning: Start your day with a visit to Buckingham Palace, the official residence of the British monarch. You can watch the Changing of the Guard ceremony, or take a tour of the State Rooms (available during the summer months).
• Afternoon: After lunch, head to the nearby Westminster Abbey, one of the most famous churches in the world. This historic site has been the site of coronations, weddings, and funerals for centuries.
• Evening: End your day with a visit to the London Eye, a giant Ferris wheel that offers stunning views of the city. You can also take a river cruise on the Thames to see the city from a different perspective.

I hope this itinerary gives you a good idea of what to do during your 3 days in London. Have a great trip!