I went alone, followed by a bilingual tour guide, English and Spanish. Then, I suggest to participate in the batch that can see the sunset, which is really great. The whole building is a historic office building, built according to dante's writings, many details of the building incorporate a lot of thought elements. For example, the flowers in the hall represent the fire of hell, and the black and white tiles represent justice and evil. The old hand-pulled elevator is very flavorful. There is a cafe and observation deck on the 16th floor, but the viewing platform on the 20th floor is the most beautiful! Especially the whole sky is pink at sunset and dusk. Finally, it will pass a spiral narrow staircase, really narrow and short. Climbing to the light box room, a very interesting trip.