The size of a large house, the powder-blue Beauxbatons carriage is drawn by a dozen palomino horses, each the size of an elephant.
From the Story
Discovered in Book 4, Chapter 15, Beauxbatons and Durmstrang
"The carriage is used to transport the Beauxbatons students to Hogwarts for the Triwizard Tournament. It is also where the Beauxbatons students sleep whilst visiting at Hogwarts."
Discovered in Book 4, Chapter 16, The Goblet of Fire
"The Beauxbatons Carriage is parked two hundred yards from Hagrid's front door, near to the Forbidden Forest. Madame Maxime and the Beauxbatons students use the carriage as sleeping quarters during their stay at Hogwarts."