http://holland.org.pl/art.php?kat=art&dzial=zul&id=7&lang=en

Until the 16th century, all villages had a compact layout, which was associated with the type of the village foundation system - allocation of plots, farms, fields, and a three-field cultivation method. Settlements established in the 14th and 15th centuries were of the following types: ***an oval village***, a street-square village, a one- or two-sided linear village, a multi-street village, a sakowa village, a square hamlet, a linear hamlet, and a manor


http://en.wikipedia.org/wiki/Square_kilometre

Medieval city centres

The medieval city of Brugge, a major centre in Flanders, was ***roughly oval*** or ellipsoidal in shape with the longer or semi-major axis running north and south.


http://www.experiencesomerset.co.uk/the-cornhill-the-market-...

Bridgwater was a flourishing town throughout this thousand years, with a very colourful and eventful history. Throughout the town there are still buildings and relics, pieces of the jigsaw puzzle, that can help us reconstruct what the town was like in medieval times.
It was *** roughly oval *** with an east-west axis, and protected by a ditch and an earth rampart with a wooden stockade. There were 4 stone gates where tolls were charged on goods entering the town

http://drum.lib.umd.edu/bitstream/1903/13583/1/LaCombe_Final...

At the center of any European city one will almost surely find a roughly oval-shaped urban core of narrow streets, small squares, and dense buildings.

http://www.heritagegateway.org.uk/Gateway/Results_Single.asp...

The complete outline of the perimeter forms a roughly oval plan measuring approx 290m by 200m.