The 72 km circle

Stockbridge, England   164 km radius.

164 km Harwick, England

Ypres, France

At Cappy, France a unique river meandering.

Caen, France. Very often, for some reason, major intersections and other highly engineered structures are placed on, or very close to these lines.

At 242 kilometers radius.

On the Island of Jersey, France.

325 km radius circle

510 km

At 700 km....

At 5535 kilometers radius across No. America

At 11754 kilometers New Zealand