Rothesay Castle

Rothesay Castle commands attention with its distinctive roughly circular layout, spanning about 42 meters across. This unique form includes a curtain wall originally built from yellow and red sandstone blocks known as ashlar, with walls initially reaching nearly eight meters high and later heightened to around ten meters. Constructed atop a low earth mound, these walls were thick and sturdy, designed to provide defense while encircling the inner courtyard. Originally, the curtain wall featured wide gaps at the top, called crenellations, for archers to defend the castle, and holes that supported a timber walkway, called a bretasche, over the walls.

Four large round towers punctuate the wall at the northwest, northeast, southeast, and southwest points. Among them, the northwest tower was the largest and housed private chambers. In the 17th century, this tower was repurposed to serve as a pigeon tower, or dovecote, and after partially collapsing in 1937, it was rebuilt. The northeast tower remains the best preserved, while the southeast tower survives primarily as a wall base, and much of the southwest tower has been lost over time. These towers rest on splayed, or angled, bases, which help deflect attacks, and contain arrow slits shaped somewhat like shovels, an unusual design allowing defenders to shoot while protected.

Extending northwards from the main enclosure is the castle’s gatehouse, constructed in the early 1500s. This forework occupies a rectangular space with an L-shaped design, featuring a vaulted entrance tunnel through which a drawbridge once allowed controlled access over the broad moat. The gatehouse also contains four stories of royal apartments, identifiable by the carved royal coat of arms positioned above the main door. Below the entrance passage lies a porter’s lodge and a prison cell fitted with a latrine, underlining the building’s function in both defense and administration.

Inside the courtyard, the footprints of former wooden buildings, such as stables and a smithy, have been archaeologically identified, indicating the range of daily activities that took place within the castle walls. On the eastern side, a chapel dedicated to St. Michael was added around the year 1500. Measuring approximately 7 by 14 meters, its interior once featured a piscina—a basin used for washing sacred vessels—and a wall cupboard, both situated on the eastern wall. The chapel’s ground floor served practical purposes, being used for storage.

Surrounding the entire structure is a wide moat, historically linked to the nearby sea to provide a natural barrier. Today, a modern bridge crosses the moat on the northern approach. Restoration efforts over the past two centuries have involved reconstructing the great hall located on the first floor of the gatehouse, repairing sections of the curtain wall and towers, clearing and reshaping the moat, and rebuilding the pigeon tower that had suffered considerable damage.

Together, these surviving features demonstrate Rothesay Castle’s evolution as a military stronghold, royal residence, and administrative center spanning several centuries of Scottish history.