On my perfect day I would wake up in a big room in a big city, for example in Paris. I would go for a walk around the city and look at different places of interest, take a lot of photos there.
Then I wold go shopping and buy everything I want: beautiful clothes, an album of the sights of Paris and a lot of souvenirs for my friends and parents.
The weather would be sunny and warm, but not hot. I would go to the park near the river.
In the evening I would go to the Eifel Tower and meet new friends from different countries, because there always many tourists.
I think that this day might be real if I had enough money and knew foreign languages well.