1. Toshogu Shrine
2. Description: Start your journey at the magnificent Toshogu Shrine, a UNESCO World Heritage Site and one of Japan's most ornate shrines. Dedicated to Tokugawa Ieyasu, the founder of the Tokugawa Shogunate, this shrine complex boasts exquisite carvings and decorations, including the famous 'See No Evil, Hear No Evil, Speak No Evil' monkeys. The Yomeimon Gate, considered the most beautiful in all of Japan, is a testament to the incredible craftsmanship of the Edo period. Rating: 4.8/5
3. Visit Time: 09:00 - 11:00 (2 hours)

4. Next: Enjoy a traditional Japanese lunch at a nearby restaurant.

5. Kegon Falls

6. Description: After lunch, head to Kegon Falls, one of Japan's three most beautiful waterfalls. Standing tall at 97 meters, the falls offer a breathtaking sight, especially in autumn when surrounded by vibrant foliage. An elevator takes visitors down to an observation deck, providing an up-close and awe-inspiring view of this natural wonder. Rating: 4.6/5
7. Visit Time: 12:30 - 13:30 (1 hour)

8. Note: Don't forget to bring a camera to capture the stunning scenery.

9. Rinno-ji Temple and Taiyuinbyo

10. Description: Continue your spiritual exploration at Rinno-ji Temple, Nikko's most important Buddhist temple. Founded in the 8th century, it houses the Sanbutsudo Hall, where three large gold-lacquered statues of Buddha await. Adjacent to it lies Taiyuinbyo, the mausoleum of the third shogun, Iemitsu, with its serene gardens and intricate architecture reflecting a more subdued elegance compared to Toshogu Shrine. Rating: 4.5/5

11. Visit Time: 14:00 - 15:30 (1.5 hours)

12. Nikko's Tamozawa Imperial Villa Memorial Park

13. Description: Conclude your day trip with a stroll through Tamozawa Imperial Villa, a hidden gem that served as a summer retreat for the Imperial Family. The villa, with over 100 rooms, showcases a fusion of traditional Japanese and Western architectural styles and is nestled amidst lush gardens, offering a tranquil respite before returning to Tokyo. Rating: 4.4/5
14. Visit Time: 16:00 - 17:00 (1 hour)
15. Dinner Tip: On your way back to Tokyo, consider trying some local delicacies like yuba (tofu skin) dishes.

This well-rounded itinerary ensures you make the most out of your day trip from Tokyo to Nikko, capturing the essence of its cultural legacy and natural splendor.