The Tower is of brick and was the entrance to the cour d'honneur of the 1560s rebuilding. Of four storeys, it has recessed staircase turrets to each side, creating what the architectural historian Mark Girouard described as an "extraordinarily slender and elegant" appearance. The courtyard was open on the tower side, its three facades containing seven classical doorways. Girouard notes Horace Walpole's observation of 1752, "perfect and very beautiful". Such an arrangement of a three-sided courtyard with a prominent gatehouse set some way in front became popular from Elizabethan times, similar examples being Rushton Hall and the original Lanhydrock.