Hogwarts Through the Ages

Based on every style of Hogwarts from these 20 years:

It towers above the Express and the Black Lake(2018 style).

Going up the cliff, spot the window of a secret chamber.

Dine in the Great Hall(2001s) with floating candelabra and the enchanted ceiling. Beware it may snow for real!

Sneak into the Room of Requirement (spot a lost diadem) as it turns into a broom closet to keep the nosy away.

Up, look through the telescope(2001-2s), is that a Norwegian Ridgeback being taken to Romania?

Back at the Entrance Hall(2004s), take the stairs(2001s) to McGonagall's office.

Or take a treat in the secret room(2010s): Chocolate frogs, EveryFlavourBeans, Pumpkin pasties and a flying key?

Below, get a cauldron cake from the chest above the bookshelf(2010s).

Use Wingardium Leviosa to move it and open the door behind.

Pass Snape's secret room with a handy bezoar.

Use magic in the library to pull the steps to the second floor(2018s).

The griffin statue will lift you up to Dumbledore's office(2021s).