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After enjoying the park's tranquility, venture to the Hanazono Shrine for an authentic Shinto experience. As night falls, explore Golden Gai's lively bars and Kabukicho for nightlife excitement, culminating your day with the incredible light show at the Tokyo Metropolitan Government Building.
Day 6: Mount Fuji or Hakone Day Trip
Plan a day trip to either Kawaguchiko or Hakone for stunning Mount Fuji views. Take a highway bus or limited express train from Shinjuku, since weekdays minimize traffic.
In Kawaguchiko, visit the Kawaguchi Lake for beautiful scenery, or opt for a tour around Hakone, where you can explore hot springs, enjoy a pirate ship ride on Lake Ashi, and see the famous Tori gate.