4-Day Shoestring Budget Itinerary for London, UK

1. Day 1: The British Museum
   10 minutes (0.5 miles) from Tottenham Court Road station

   Explore one of the world's oldest and largest museums, founded in 1753, and home to a vast collection of art and artifacts. Highlights include the Rosetta Stone, the Parthenon sculptures, and Egyptian mummies.

2. Day 2: Tower of London and Tower Bridge
   20 minutes (1 mile) from The British Museum

   The Tower of London is a UNESCO World Heritage Site with a rich and sometimes gruesome history. Be sure to see the Crown Jewels, walk the medieval walls, and meet the famous Beefeaters. Cross the Thames on Tower Bridge for great views of the city.

3. Day 3: Camden Market and Regent's Park
   30 minutes (2 miles) from Tower of London and Tower Bridge

   Camden Market is a colorful collection of vendors selling everything from vintage clothes to street food. Nearby Regent's Park is a lovely green space with walking paths, gardens, and even a zoo. A perfect place to relax away from the hustle and bustle of the city.

4. Day 4: St. Paul's Cathedral and the Millennium Bridge
   25 minutes (1.5 miles) from Camden Market and Regent's Park

   St. Paul's Cathedral is an iconic London landmark with stunning architecture and history dating back to the 17th century. Visit the Whispering Gallery or climb to the Golden Gallery for panoramic views of the city. Walk across the nearby Millennium Bridge to the Tate Modern for more art and amazing views of the Thames.

Time and Costs Estimates

• The British Museum (2-3 hours, free admission)
• Tower of London and Tower Bridge (3-4 hours, £29 admission to both)
• Camden Market (1-2 hours, free admission)
• Regent's Park (2-3 hours, free admission)
• St. Paul's Cathedral (2-3 hours, £20 admission)
• Tate Modern (2-3 hours, free admission with optional donations)
Total Estimated Costs: £49 per person

Useful Tips

If you have more time, consider visiting other free museums like the National Gallery or the Tate Britain, or exploring neighborhoods like Notting Hill or Shoreditch. If you have less time, you can combine some of the sights throughout the itinerary based on proximity. Also, try to avoid peak times for some attractions by visiting early in the morning or later in the day.