Salisbury Cathedral of a bell tower which stood about northwest of the main building. Salisbury is one of only three English cathedrals to lack a ring of bells, the others being Norwich Cathedral and Ely Cathedral. However, its medieval clock does strike the time with bells every 15 minutes. In total, 70,000 tons of stone, 3,000 tons of timber and 450 tons of lead were used in the construction of the cathedral. On 25 October 2018, there was an attempted theft of the "Magna Carta" from the cathedral; the alarms were triggered and a 45-year-old man was later detained on suspicion of
Octagonal antiprism has the two "n"-gonal bases and, connecting those bases, 2"n" isosceles triangles. If faces are all regular, it is a semiregular polyhedron. Octagonal antiprism In geometry, the octagonal antiprism is the 6th in an infinite set of antiprisms formed by an even-numbered sequence of triangle sides closed by two polygon caps. Antiprisms are similar to prisms except the bases are twisted relative to each other, and that the side faces are triangles, rather than quadrilaterals. In the case of a regular 8-sided base, one usually considers the case where its copy is twisted by an angle 180°/"n". Extra regularity is