Tokyo is a vibrant and exciting city with so much to see and do. Here's an ideal itinerary for 4 days in Tokyo:

Day 1:

Start your day by visiting the iconic Tokyo Tower. This tower offers stunning views of the city and is a great way to get your bearings. After that, head to the nearby Zojoji Temple, a beautiful Buddhist temple with a rich history. From there, take a short train ride to the trendy Shibuya neighborhood. Here, you can experience the famous Shibuya Crossing, one of the busiest intersections in the world. You can also explore the many shops and restaurants in the area.

Day 2:

Begin your day by visiting the Meiji Shrine, a beautiful Shinto shrine dedicated to Emperor Meiji and Empress Shoken. After that, head to the nearby Harajuku neighborhood, known for its quirky fashion and street food. Here, you can try some delicious crepes and explore the many shops and boutiques. In the afternoon, head to the nearby Shinjuku neighborhood, where you can visit the Tokyo Metropolitan Government Building for stunning views of the city.

Day 3:

Start your day by visiting the historic Asakusa neighborhood. Here, you can visit the famous Sensoji Temple, one of the oldest temples in Tokyo. After that, explore the nearby Nakamise shopping street, where you can find traditional Japanese souvenirs and snacks. In the afternoon, head to the nearby Ueno Park, where you can visit the Tokyo National Museum and the Ueno Zoo.

Day 4:

Begin your day by visiting the Tsukiji Fish Market, one of the largest fish markets in the world. Here, you can watch the famous tuna auction and try some delicious sushi. After that, head to the nearby Ginza neighborhood, known for its high-end shopping and dining. In the afternoon, visit the Odaiba neighborhood, where you can see the famous Rainbow Bridge and visit the many shopping malls and attractions in the area.

Of course, this is just a sample itinerary and there are many other things to see and do in Tokyo. But hopefully, this gives you a good starting point for your trip!