Places
Ministry of Magic
The Ministry of Magic is the government of wizarding Britain, reached by visitors through a telephone box in London and by employees through the fireplaces. It holds courtrooms, the Department of Magical Law Enforcement, and the Department of Mysteries. Under Pius Thicknesse and the Death Eaters it persecutes Muggle-born witches and wizards.
In the books
Harry Potter and the Chamber of SecretsChapter: The Burrow
Arthur Weasley’s job puts the Ministry into Harry’s second year. Harry first walks the halls in Order of the Phoenix, in the chapter The Ministry of Magic.