planned neighborhood of Parque das Nações in Lisbon has also a different numbering scheme: each building is referred by its plot, parcel, and building (in Portuguese: lote, parcela, prédio). United Kingdom The European system is most widely used. The odd numbers will typically be on the left-hand side as seen in the direction of increasing numbers (most commonly with the lowest numbers at the end of the street closest to the town or village centre). Intermediate properties usually have a number suffixed A, B, C, etc., much more rarely instead being given a half number, e.g. the old police station at Camberwell Church Street. It is extremely rare for a property (built next to no. 2 after the street had been numbered) to be zero (0) or named Minusone; in 2013 researchers found these instances once in Middlesbrough and once in Newbury. In 2022, starting to type "0," into the Royal Mail postcode search revealed Middlesbrough is becoming a hotbed of zero-numbered properties, with four listed properties, whilst Birmingham, Ellesmere Port, Lincoln and London list only one each. In many rural streets, significantly built alongside before 1900, houses remain named and unnumbered. In some places, particularly when open land, a river or a large church fronts one side, all plots on one side of a street are numbered consecutively. Such a street if modern and long is more likely to be numbered using odd numbers, starting at 1. Along oldest streets, numbering is usually clockwise and consecutive: for example in Pall Mall, some new towns, and in many villages in Wales. This often also applies to culs-de-sac and standalone terraces. For instance, 10 Downing Street, the official home of the Prime Minister, is next door to 11 Downing Street. Houses which surround squares, as well as market places, are usually numbered consecutively clockwise. In the early to mid 19th century numbering of long urban streets commonly changed from clockwise (strict consecutive) to odds facing evens, particularly when roads were extended into new suburbs. Where this took place it presents a street-long pitfall to researchers using historic street directories and other records. A very rare variation may be seen where a high street (main street) continues from a less commercial part – a road which breaks the UK conventions by not starting at 1 or 2. On one side of the main road between Stratford and Leytonstone houses up to no.