An indescribably wonderful trip and the best day tour I have ever taken. First of all, the bus tour guide himself had white hair and wore a traditional Icelandic patterned wool sweater, looking like a Viking stepped right into reality and instantly creating a strong sense of immersion. Along the way, we saw the magnificent daytime waterfall shining brightly under the brilliant sunshine. When taking the boat tour of the glacier lagoon, the captain gave each of us a piece of transparent, thousand-year-old iceberg to hold for photos. The apocalyptic feel of Diamond Beach was then brought to life with a ray of bright sunshine. We enjoyed delicious volcanic rock black pizza and endless refills of soup in a bread bowl in the town of Vik. We saw the Seljalandsfoss waterfall at night, surrounded by stars and the aurora borealis amidst the mountains—a rare and wonderful experience in a lifetime. On the way back, we were very lucky to encounter a major aurora outburst. The guide said that according to the rules, he was supposed to return the bus on time without stopping, but he felt we shouldn't miss such a gorgeous aurora, so he decided to take the risk to give us a lucky moment! He finally found a super viewing platform, and we all stopped to capture the most stunning night of the northern lights. It was an extremely memorable journey. Plus, there was free Wi-Fi throughout the entire trip, and the heating was so warm that wearing just a single sweater inside the bus was more than enough. The guide not only introduced every attraction to us, but before parting ways, he also shared his favorite local itinerary as an Icelandic native, including municipal hot springs, sculpture art, and the whale museum, among others. All in all, it was a perfect journey combining nature and culture, entirely deserving of a full score. If you are staying in Reykjavik, taking a tour like this means you won't miss a thing on the South Coast.