Hogwarts Castle

Rowling has suggested that she may have inadvertently taken the name from the hogwort plant (Croton capitatus), which she had seen at Kew Gardens some time before writing the Harry Potter series, although the names "The Hogwarts" and "Hoggwart" appear in the 1954 Nigel Molesworth book How To Be Topp by Geoffrey Willans.
Hogwarts school was voted as the 36th best Scottish educational establishment in a 2008 online ranking, outranking Edinburgh's Loretto School. According to a director of the Independent Schools Network Rankings, it was added to the schools listing "for fun" and was then voted on.