Most likely, Harry Potter himself would be one of the main characters. He has a natural inclination for adventure and would be eager to explore the world on the train. Hermione Granger would also be there, with her vast knowledge of magic to help them out in different situations. Ron Weasley too, for his loyalty and friendship.
One interesting scenario could be the Hogwarts Express traveling to far - flung magical locations in Asia. Maybe it stops at a hidden magical village in the Himalayas where they have unique spells and potions. Another could be it going across the Americas and encountering magical creatures that are native to those regions, like the Thunderbird in North America.
Maybe Neville. He has grown a lot in his magical abilities and his courage. He could bring his knowledge of herbology, which might be useful in different parts of the world. Luna Lovegood could also be a great companion. Her unique perspective on magic would help Harry see things in a different light during his travels.
The internet has played a huge role in spreading 'Harry Potter' fanfiction around the world. There are many fanfiction websites like Archive of Our Own and FanFiction.net where fans from all over can post and read these stories. Social media also helps, as fans share their favorite fanfictions with their friends and followers. Word - of - mouth is another factor. Once a really good fanfiction gets noticed by a group of fans, they'll recommend it to others, and it just spreads.
Well, in some ways it can be. Some fanfiction might deviate a lot from the original values of the 'Harry Potter' series. For example, if it contains dark and disturbing themes that are not in line with the overall positive and moral tone of the books. Also, some fanfiction could potentially mislead new fans who are not familiar with the real essence of the story.
In such fanfictions, one interesting scenario could be Harry Potter visiting the Great Wall of China. He might use his magic to explore the hidden parts of the wall that are not accessible to Muggles. Another could be his visit to the Amazon rainforest, where he discovers magical creatures unique to that area and has to use his skills to protect them from dark wizards who want to exploit their magic.
The popular Harry Potter movies were:
1 Harry Potter and the Philosopher's Stone
Harry Potter and the Order of the Phoenix
Harry Potter and the Goblet of Fire
Harry Potter and the Order of the Phoenix
Harry Potter and the Deathly Hallows (Part One)
Harry Potter and the Deathly Hallows (Part Two)
Harry Potter and the Half-Blood Prince
Harry Potter and the Deathly Hallows: Part Three
One idea could be a crossover where Train Heartnet, with his unique skills as a sweeper, somehow ends up in the wizarding world of Harry Potter. Maybe he's on a mission to retrieve a magical artifact that has fallen into the wrong hands in Hogwarts. His combat abilities and sharp senses would make for an interesting dynamic in the magical setting.
Well, in such a fanfiction, Harry might disappear to train in some hidden place, away from the prying eyes at Hogwarts. Maybe he goes to a secret location with a powerful wizard who teaches him advanced magic that he couldn't learn at school. This could include dark magic defenses or ancient spells.
Merlin might start by teaching Harry the basics of magic from a different perspective. Maybe he would show Harry how to draw magic from the very essence of nature. For example, instead of using a wand in the traditional way, he could teach Harry to use his hands and the energy around him.