Tokyo is the capital and largest city of Japan and is known for its modern and traditional culture. As a tourist destination, it offers a wide range of attractions, including historical sites, museums, temples, shopping, entertainment and much more. 

Potential Itinerary for a one-day visit

1. Start the day by visiting the Senso-ji Temple. This is the oldest temple in Tokyo and is an important place of worship for the local community. The temple is surrounded by a lively shopping street called Nakamise-dori, where you can buy souvenirs and traditional Japanese snacks.
2. Visit the Tsukiji Fish Market, which is one of the largest fish markets in the world and offers a wide variety of fresh seafood. You can also watch tuna auctions, which are held in the early morning.
3. Have a traditional Japanese lunch at a sushi restaurant in Tsukiji.
4. Visit the Meiji Shrine, which is a Shinto shrine that is dedicated to the deified spirits of Emperor Meiji and his consort, Empress Shoken. The shrine is located in a large park that offers a nice change of pace from the hustle and bustle of the city.
5. Visit the Tokyo Tower, which is a communications and observation tower that offers great views of the city.
6. End the day by visiting the Shinjuku Gyoen National Garden, which is a large park that features traditional Japanese gardens, as well as French and English landscapes. The park is a great place to take a relaxing stroll and enjoy the beauty of nature in the heart of the city.