Ulaanbaatar
Ulaanbaatar, formerly anglicised as Ulan Bator (, , literally "Red Hero"), is the capital and largest city of Mongolia. The city is not part of any aimag (province), and its population was over 1.3 million, almost half of the country's total population. Located in north central Mongolia, the municipality lies at an elevation of about in a valley on the Tuul River. It is the country's cultural, industrial and financial heart, the centre of Mongolia's road network and connected by rail to both the Trans-Siberian Railway in Russia and the Chinese railway system.
Conurbation
The United Arab Emirates, while comprising seven distinct entities called emirates, each with its own Emirs, contains a significant conurbation formed by the agglomeration of the urban areas of three cities belonging to three separate Emirates. The Dubai-Sharjah-Ajman metropolitan area contains the urban areas of Dubai to the south, Sharjah in the middle and Ajman toward the north eastern end of the conurbation. The total population is about 5.64 million people as of 2015 and as such, contributes to over 70% of the UAE population. Dubai is the major financial hub and Sharjah serves as an industrial, educational, cultural and major residential centre.The Flemish Diamond () is the Flemish reference to a network of four metropolitan areas in Belgium, three of which are in the central provinces of Flanders, together with the Brussels Capital Region. It consists of four agglomerations which form the four corners of a diamond shape: Brussels, Ghent, Antwerp and Leuven. Over five million people live in this conurbation, with a population density of more than 800 per square kilometre.
Actually, given the high level of commuting from and to Brussels every day, supported by one of the densest networks of railways and motorways in the world, It could be easily argued that the whole Belgium and Luxembourg area is one conurbation or is becoming one.