4-day itinerary for Tokyo: 

Day 1: Arrival and Exploring Shibuya & Harajuku

*How to Get There: Fly into Narita or Haneda Airport. 

*Activities & Attractions:
- Shibuya Crossing: Experience the world's busiest pedestrian crossing.
- Hachiko Statue: Take a selfie with the famous loyal dog statue.
- Meiji Shrine: A peaceful Shinto shrine located in a forested area.
- Takeshita Street: Explore quirky shops and trendy fashion in Harajuku.

*Food to Try:
- Lunch: Ramen at Ichiran Ramen in Shibuya.
- Dinner: Sushi at Sushi Zanmai in Shibuya.

Day 2: Traditional Tokyo - Asakusa & Ueno

*Activities & Attractions:
- Senso-ji Temple: Tokyo's oldest temple in Asakusa.
- Nakamise Shopping Street: Souvenir shopping near Senso-ji.
- Ueno Park: Explore the park and visit Ueno Zoo or Tokyo National Museum.

*Food to Try:
- Lunch: Tempura at Daikokuya in Asakusa.
- Dinner: Unagi (eel) at Unatoto in Ueno.

Day 3: Modern Tokyo - Odaiba & Roppongi

*Activities & Attractions:
- Odaiba: Visit teamLab Borderless, DiverCity Tokyo Plaza, and the Odaiba Seaside Park.
- Roppongi Hills: Explore the Mori Art Museum and Tokyo City View observation deck.

*Food to Try:
- Lunch: Takoyaki (octopus balls) at Odaiba.
- Dinner: Izakaya (Japanese pub) food at Gonpachi in Roppongi.

Day 4: Imperial Palace & Shinjuku

*Activities & Attractions:
- Imperial Palace East Gardens: Explore the beautiful gardens.
- Shinjuku Gyoen National Garden: A large park with traditional Japanese gardens.
- Tokyo Metropolitan Government Building: Free observation decks with stunning city views.

*Food to Try:
- Lunch: Tonkatsu (breaded pork cutlet) at Maisen in Shibuya.
- Dinner: Yakitori (grilled chicken skewers) at Omoide Yokocho in Shinjuku.

Enjoy your trip to Tokyo! If you need any more details or have specific preferences, feel free to ask. 😊