Hogwarts, Other Locations, and Transportations
Slytherin House
Hufflepuff House
Gryffindor House
Ravenclaw House
200

Dobby blocks access to this in Harry's fourth year in an effort to keep him from returning to Hogwarts.

What is Platform 9 3/4?

200

Everybody's favorite white-blond, pointy faced, blood-purist school bully.

Who is Draco Malfoy?

200

The animal featured on the Hufflepuff House badge.

What is a Badger?

200

The head of Gryffindor house during Harry's school years.

Who is Minerva McGonagall?

200

The animal on the Ravenclaw House badge.

What is an Eagle?

400

The place where the third task of the Triwizard Tournament takes place.

What is The Maze?

400

The wizard who kills Albus Dumbledore.

Who is Severus Snape?

400

The founder of Hufflepuff House.

Who is Helga Hufflepuff?

400

The Gryffindor House ghost.

Who is Nearly-Headless Nick?

400

The founder of Ravenclaw House.

Who is Rowena Ravenclaw?

600

The time that the Hogwarts Express leaves the station at King Cross on first day of term.

What is 11am?

600

The location of the Slytherin Dormitories.

What is the Dungeon?

600

Hufflepuff's resident ghost.

Who is the Fat Friar?

600

Harry's Godfather, and first of his family to not be sorted into Slytherin.

Who is Sirius Black?

600

An egotistical wizard once sorted into Ravenclaw. Proficient at memory charms.

Who is Gilderoy Lockhart?

800

Hermione's go-to book for learning about Hogwarts Castle.

What is Hogwarts: A History?
800

The Slytherin house ghost.

Who is the Bloody Baron?

800

The position Cedric Diggory played in quidditch. 

What is seeker?

800
The two Weasley sons who became Head Boy in their year. 

Who are Bill and Percy Weasley?

800

In lieu of a password, this would be given to you by the Ravenclaw Knocker to be granted entry.

What is a Riddle?

1000

You might know Ernie Prang and Stan Shunpike, two employees of this service.

What is the Knight Bus?

1000

The future Mrs. Malfoy who was also sorted into Slytherin, two years younger than the Golden Trio.

Who is Astoria Greengrass?

1000

The first student in Harry's year to be sorted, also the future wife of Neville Longbottom.

Who is Hannah Abbot?

1000

A Dumbledore's Army member, Gryffindor Chaser, and torture victim of a cursed necklace.

Who is Katie Bell?

1000

These two famous Gryffindor Witches were nearly sorted into Ravenclaw during a hatstall, lasting five and half and four minutes respectively.  

Who is Minerva McGonagall and Hermione Granger?