Across the way from the church is a magnificent heptagonal keep.
The weight of the heptagonal 50p coin is three times that of the heptagonal 20p coin.
There is no size/value relationship between the round and heptagonal cupro-nickel coins.
There is a great deal of advantage in these heptagonal pieces.
It is formed as two parallel heptagonal antiprisms connected by cubes and triangular prisms.
The apse is heptagonal and has in its lower half seven pointed arches filled with opus sectile.
