Tenzl-Akoko

Tenzl-Akoko, or more accurately the twin cities of Tenzl and Akoko, are two cities built on opposite sides of the banks of the Zulaca river, in Hirokir. Though technically two separate city-states, they are usually aligned in their interests, have a shared culture, and are usually treated as a single political entity by other powers.
Tenzl-Akoko is the largest trading hub in Hirokir, due to their important position on the Zulaca. Trading barges from the twin cities travel upriver to Aram'Kai and Szi'Zundor, or downriver to Zul'Garab, and act as an intermediary between these cities.
Though most commonly referred to as "The Twin Cities", Tenzl-Akoko are also known as the "Cities of Love". The cities themselves are named after a famous pair of lovers in Hirokiri legend; Tenzl and Akoko. The Festival of Love every spring is the most important festival in the cities.
Tenzl and Akoko are built on the widest stretch of the Zulaca, and are situated on its flood plains. During the bi-annual flooding of the river, the streets of the cities become flooded, and so the buildings are built high, and are connected by a web of bridges and walkways. Connecting the cities together is a mass of floating wooden buildings, bridges, and boats, called the Floating Market, which are anchored to the river base, but which shift drastically season by season. During the summer and winter flooding of the Zulaca, it becomes more dangerous to travel across the river, or to have any floating buildings situated within it, so the Floating market disperses and moves closer to the cities themselves. When the river shrinks again during the spring and autumn, the Floating Market moves into the middle of the river, reconnecting the cities, and the flood plains become farms.
Tenzl-Akoko produces more food than any of the other Hirokiri cities, due to their reliable agricultural processes, and incredibly fertile flood plains. This, combined with their nature as a trading hub, makes the cities incredibly prosperous.