A broach spire is a type of spire (a spire is a tall pyramidal or conical structure, usually on the top of a tower or turret) that starts on a square base and is carried up to a tapering octagonal spire by means of triangular faces.
A broach spire is a type of spire (a spire is a tall pyramidal or conical structure on the top of a tower or turret). This is usually. This spire (a spire is a tall pyramidal or conical structure on the top of a tower or turret) starts on a square base. This is usually. This spire (a spire is a tall pyramidal or conical structure on the top of a tower or turret) is carried up to a tapering octagonal spire by means of triangular faces. This was usually.