5. The noisy plants

Mandrakes, the screaming plants seen in the Harry Potter movies, can be spotted in static form in the greenhouse section of the Harry Potter and the Forbidden Journey queue. Elsewhere, a moving version can be seen in the shop window of the Dogweed and Deathcap store. The window also holds a packet of Gillyweed seeds, which you can use to grow gills.

4. The horcruxes

Look closely at the moving portraits of the four founders of Hogwarts (Godric Gryffindor, Salazar Slytherin, Rowena Ravenclaw and Helga Hufflepuff) in the queue for Harry Potter and the Forbidden Journey. Each is holding an object that Lord Voldemort stole from them to create his evil Horcruxes.

3. A useless book

In the Gryffindor common room inside Hogwarts Castle, look out for the Dark Arts Defence: Basics for Beginners book, sitting on a stack of volumes in the corner. Professor Umbridge assigns the book to the class in Harry Potter and the Order of the Phoenix, as a way of preventing them from learning anything useful.

2. Neville's lesson

Don’t rush past the Potions classroom door as you race through the queue for Harry Potter and the Forbidden Journey – you’ll miss hearing a professor providing instructions to Neville Longbottom.

1. A baby dragon

Next to Hagrid’s Hut in the Flight of the Hippogriff queue line is a crate marked “Baby Norwegian Ridgeback”, a reference to Hagrid’s purchase of a dragon egg in the first book and movie.

Learn more about Universal Orlando

To learn more about the Universal Orlando Resort, check out Universal Orlando: The Unofficial Story - the first book ever to document its creation and evolution, from its debut to the present day. The book is available from Amazon.com and Amazon.co.uk in paperback and Kindle formats.