Start your Tokyo city tour from Meiji Jingu, a shrine built in 1920 to commemorate Emperor Meiji and Empress Shoken. Although located in Tokyo's bustling city center just a few minutes' walk away from Harajuku, the shrine's surrounding forest creates a peaceful, tranquil vibe, and if you happen to enter from the Yoyogi entrance, you can see a massive torii gate standing in the road leading to the main shrine. In addition to making offerings and praying at the main shrine just like the locals do, you can also visit Meiji Jingu Museum to see the treasures from the shrine's collection.
Perhaps there is no better place to learn about Japan's culinary culture in Tokyo than the centrally-located Tsukiji Outer Fish Market. Dating all the way back to the Edo Period, it was moved to the current location after the Great Kanto Earthquake of 1923. Around 400 shops and restaurants are crammed into the narrow lanes here, trading all kinds of fresh and dried seafood, traditional snacks and cooking ingredients. Roam around the market as your guide explains Japan's culinary culture, and stop at a restaurant to try some fresh seafood for breakfast or lunch if you wish.
Step into the East Gardens of the Imperial Palace, the only place open to the public in the palace. The garden sits on the grounds of the former Edo Castle, featuring seasonal flowers, lush green lawns, water features, teahouses and guardhouses. You can also take in the sight of the double-arched Nijubashi Bridge, which originally was built with wood but later rebuilt with steel. Please note East Gardens of the Imperial Palace closes on Monday and Friday.
Afterward, visit Senso-ji Temple, one of Tokyo's most significant Buddhist temples with a history dating back to the 7th century. After slipping pass the giant lanterns on the Kaminarimon, which is the outer gate of the temple, stroll along the lively Nakamise-dori, a 250-meter-long street lined by shops bursting with traditional souvenirs, snacks and sweets. Then arrive at the second gate Hozomon, beyond which stands the temple's main hall and a five-story pagoda. You can pray to the Kannon enshrined in the main hall just like the locals do, pick up an omikuji (random fortunes written on strips of paper), and get a temple seal stamp at the Yokodo located next to the main hall.
Overnight in Tokyo.