* The Hogwarts Express is a ride that simulates a journey on the iconic train, and it does not go upside down. It's more of a gentle, immersive experience.
* Harry Potter and the Escape from Gringotts in Universal's Islands of Adventure does go upside down! This ride takes you on a thrilling journey through Gringotts bank with plenty of twists and turns, including several inversions.
* Flight of the Hippogriff in Universal's Islands of Adventure is a smaller roller coaster for younger riders and does not go upside down. It's a smooth and fun ride with a few small drops.
So, it really depends on which ride you're asking about!