The city of pipes and light is in the Byzant Empire
While travelling through an unfamiliar area of the city at night, it it easy for one to become quite lost. Though this is an upper-class residential neighbourhood just east of downtown, the streets wind, twist, and turn in upon themselves in a rather chaotic fashion.
The wealthy landowners of Ardales began to grow personal gardens on their flat rooftops. The shade helped cool the buildings. The competition renewed among the aristocracy for the lushest garden. Over time, the increased population caused an increase in building density, especially in the city’s heart.
The work is being done on the largest temple of Stryfe ever constructed. So massive is this project, that it could not have been placed within the city’s walls without displacing a large portion of Gnopolis’s inhabitants.
It seemed like a great place to camp. The clearing was good sized and sheltered from the wind. The brook just a few feet away. There is a natural hallow to keep the horses.
Then the night came.
It was like it became a different place. The temperature dropped. The wind, which does not seem to disturb cloth, almost cuts through you like an arctic wind. No one can sleep, as the soft ground has turned hard. The horses are uneasy. The Bats are flying over and stopping in the trees.
And then there is the eyes. There are glowing eyes just inside the tree line watching your group. The mages and clerics can detect nothing, but there is still something there.
(yet there is nothing at all... The Darkness will do nothing unless the players do something to it. And even then it will all seem to be a conincidence.)
Of course, in the morning, it all becomes sweet and light.