London

Here's an ideal itinerary for 3 days in London that is both fun and budget-friendly:

Day 1:

• Start your day with a visit to the iconic Tower Bridge. You can take some great photos here and learn about the history of this famous landmark.
• Next, head over to the Tower of London. This historic castle has been home to many monarchs throughout history and is now a museum where you can see the Crown Jewels and learn about the castle's past.
• For lunch, head to Borough Market. This bustling food market has a wide variety of delicious options at affordable prices.
• After lunch, take a stroll along the South Bank of the River Thames. You'll pass by many famous landmarks such as the Shakespeare Globe Theatre and the Tate Modern art museum.
• End your day with a visit to the British Museum. Admission is free, and you can spend hours exploring the vast collection of artifacts from around the world.

Day 2:

• Start your day with a visit to the Houses of Parliament. You can take a guided tour or simply admire the stunning architecture from the outside.
• Next, head over to Westminster Abbey. This historic church has been the site of many royal coronations and weddings throughout history.
• For lunch, grab a bite to eat at one of the many street food vendors in Camden Market. This vibrant market has a wide variety of food options at affordable prices.
• After lunch, take a stroll through Hyde Park. This beautiful park is a great place to relax and enjoy nature in the heart of the city.
• End your day with a visit to the National Gallery. Admission is free, and you can see works of art by some of the world's most famous artists.

Day 3:

• Start your day with a visit to the iconic St. Paul's Cathedral. You can take a guided tour or simply admire the stunning architecture from the outside.
• Next, head over to the Tate Britain art museum. Admission is free, and you can see works of art by some of Britain's most famous artists.
• For lunch, head to Brick Lane. This vibrant area has a wide variety of food options at affordable prices, including many delicious Indian restaurants.
• After lunch, take a stroll through the trendy Shoreditch neighborhood. You'll find many street art murals and unique shops here.
• End your day with a visit to the Sky Garden. Admission is free, and you can enjoy stunning views of the city from this rooftop garden.

Overall, this itinerary should give you a great taste of what London has to offer while staying within your budget. Enjoy your trip!