London

Here's a suggested itinerary for 4 days in London in January:

Day 1:

• Start your day with a visit to the iconic Tower Bridge. You can walk across the bridge and take in the stunning views of the River Thames.
• Next, head to the Tower of London, which is just a short walk away. This historic castle has been a royal palace, a prison, and a fortress over the centuries. Be sure to see the Crown Jewels while you're there.
• After lunch, take a stroll through the nearby St. Katharine Docks, a picturesque marina with plenty of restaurants and shops.
• In the evening, catch a show in London's famous West End theatre district. There are plenty of options to choose from, whether you're into musicals, plays, or comedy.

Day 2:

• Start your day with a visit to the British Museum, which is home to an incredible collection of artifacts from around the world. Be sure to see the Rosetta Stone and the Egyptian mummies.
• Next, head to Covent Garden, a bustling area filled with street performers, shops, and restaurants. You can grab lunch at one of the many cafes or pubs in the area.
• In the afternoon, take a stroll through the nearby Soho neighborhood, which is known for its vibrant nightlife and eclectic mix of shops and restaurants.
• In the evening, head to the South Bank to see the London Eye, a giant Ferris wheel that offers stunning views of the city at night.

Day 3:

• Start your day with a visit to the Tate Modern, a world-renowned art museum housed in a former power station. Be sure to check out the stunning views from the museum's observation deck.
• Next, head to the nearby Borough Market, a bustling food market with plenty of stalls selling everything from fresh produce to artisanal cheeses.
• In the afternoon, take a stroll along the Thames Path, a scenic walking route that offers stunning views of the river and the city skyline.
• In the evening, head to the nearby O2 Arena to catch a concert or show.

Day 4:

• Start your day with a visit to the Houses of Parliament and Big Ben, two of London's most iconic landmarks. You can take a guided tour of the Houses of Parliament to learn more about the history of British politics.
• Next, head to nearby Westminster Abbey, a stunning Gothic church that has been the site of coronations and royal weddings for centuries.
• In the afternoon, take a stroll through nearby Hyde Park, one of London's largest and most beautiful parks. You can rent a bike or a boat to explore the park's many attractions.
• In the evening, head to the nearby Westfield shopping center to do some last-minute shopping before your trip comes to an end.

I hope this itinerary gives you some ideas for your trip to London in January!