Sigairen, Sigären
Etymology: Sigairish: Sig (“ford”), Aire (a river)
«Freiheit und Einheit zieren der Teudonei Krone» (Tudonian)
«Freehied end Eenhied bedonen die Kron der Tüdoney»(Sigairish)
“Freedom and Unity grace Tudonia’s Crown”
Country Tudonia
First settlement519 AD
 • TypeElected body
 • BodyStadtrat
 • MayorJonas Becker (KPT)
 • Total1,995,785
 • Agglomeration
 • Urban
Demonym(s)Sigairer, Sigärer
Postal codes
10-00 to 10-15 (parts of agglomeration: 11-00 upwards)
Calling codes(+65) 10

Sigairen (Tudonian: Sigairen /ziːkˈʔaɪ̯rən/ or /ziːˈkaɪ̯rən/; more rarely Sigären /ziːkˈʔeːrən/ or /ziːˈkeːrən/; Sigairish: Sigairen /siːˈɡ̊aɪ̯rən/) is the capital of and largest city in the Kingdom of Tudonia. As of 2018, the city has a population of 496,500 within city limits and nearly two million if one includes the agglomeration (Tudonian: Großraum Sigairen).


The name Sigairen comes from Sigairish. It is generally accepted that -airen is a reference to the Aire river that flows through the north of the city, with the suffix -n (or -en) being a relatively common suffix in Tudonian place names. Though the exact etymology of Sig- is unknown, it is generally assumed that it comes from the Sigairish word for ford as the earliest known settlement in the area which was first mentioned under the names “Ayra(s)-ſîga” and later “Sîg(a)-Ayra(n)” is thought to have been founded specifically because of the proximity to a local ford. The etymology of the Sigairish word Sig for “ford” is believed to originate in the Sig river in the southern Sigairerland, which is why some regard it as an alternative etymology for the name of Sigairen. Another fairly common history behind the name is that it in fact comes from the word Sîg, meaning “siege”. This word is still found in both Tudonian and Sigairish as “Sieg” and is a common source of misspelling the city name as Siegairen.

The alternative Tudonian name of Sigairen, Sigären, comes from the fact that the modern Sigairish diphthong ai was commonly spelled as ay or ae in medieval times. With the latter having been spelled as ä due to it changing from a dipthong to /æ/ and /æː/, respectively, in Tudonian over time, the city got an alternative name. Nowadays, since the phonemes represented by the letters ä and e, respectively, merged, it is sometimes misspelled as Sigeren.





Local and regional Government

Law and Order

Districts and Boroughs

National Government





Main page: Sigaerener Verkehrsbetriebe


Streets and roads in Sigairen are — similarily to the rest of Tudonia — almost entirely government-owned. Private roads are rather exceptional and usually are connecting private property to a public road. There are, however, several different companies maintaining them, many of which are private.

Public transportation in Sigairen is provided by a mixture of private and state-owned corporations, the biggest one being the Sigaerener Verkehrsbetriebe (SVB). Many private companies run national and international bus lines or railway lines, though some private companies are specialized on providing local transportation services.

Since the 1930s, there have been continuous efforts for the construction of a metro network for Sigairen. So far, none of the plans have been realized, eventhough some of them were extremely close to being executed. Notable line-suggestions include…


Sigairen has the largest bus network by number of bus lines and ridership. It is also amongst the oldest bus network in the country, only predated by less than a year by Tanaus. In contrast to other parts of Tudonia, Sigairen lacks a uniform bus livery. This is due to the Sigairer Verkehrsbetriebe being organized in several smaller subdiaries which in many cases chose their own livery.

As most larger cities in Tudonia, Sigairen uses both rigid busses and bendy busses. Sigairen is notable amongst Tudonian cities when it comes to the bus network for it is the only city to use double decker busses on a day-to-day basis to this day.


The tramways in Sigairen were run by a companie called Sigairener Straßenbahn until 2010, when it was integrated into Sigairener Verkehrsbetriebe. Originally having been a network of horse-drawn trams, Sigairen's tram system was electrified between 1885 and 1892.

Trams in Sigairen have two different liveries: beige–brown and beige–green, with the former being more common. Typically, the top is dark brown or dark green with the rest of the car being beige. A notable exception is formed by trams with advertizement on them.


Historically, trolleybusses have been fairly present on the streets of Sigairen, with the first line opening in 1936 and the Sigairen Trolleybus System (Tudonian: Sigairener Oberleitungsbussystem) reaching its height between the 1940s and 1960s. After this time, many lines have been replaced by other means of public transportation — most notably busses — with the network having lost more than half of the lines it had in 1965. Today, almost all trolleybus lines are found in the cities outer districts, the only one still operating in a fairly central location being found in the boroughs of Bergen and Altmarck. In 2017, the line connecting Altmarck to Altharenbrünn via Hagenau was terminated, temporarily, though it is not yet known whether it will be operating again or whether it will be replaced.


Sigairen is an important hub for railways on a regional, national and even international level.


Waterborne transport


Water and Sanitation


Status of the Sigairish Language




Leisure and Entertainment










City- and Landscape


Notable Buildings

Parks and Nature

Sigairen, despite being the capital city, is among those cities in Tudonia with the highest percentage of green spaces. This is partly due to the geographical situation with some hills being to steep to build on, but partly also due to the municipal government’s decision to keep many parks and forests of lords intact, even if they had been sold off to the local government.

Important forests fully or partially within Sigairen city limits are the Sigairen Municipal Forest, the Felsey Forest and the forested parts of the Harrekamp Park.