The Viaduct Courtyard (also known as the Entrance Courtyard) is a quadrangle in Hogwarts Castle. A covered stone cloister with an open colonnade runs around it, and two checkpoint towers flank its entryway via the Viaduct. There is a stone walkway leading from this courtyard into The Quad, and into the Viaduct Entrance. The courtyard is partially paved, in a cross pattern. A popular hang-out spot for students of all Houses, this courtyard is where some students spend their spare time playing Gobstones.
On 1 September 1998, Hogwarts students marched through this Courtyard, under the supervision of Death Eaters Alecto and Amycus Carrow and Headmaster Severus Snape, as they were led into the Castle.