Hexcross Bay

Hexcross Bay of Runevale sits on the ground floor of the city. Here, large bodies of water make up the various pools of Hexcross bay. An aurora of colors sink into the bay from the magical output from the city.

Some districts of Hexcross Bay sit directly on or above the waters, being navigated through series of canals and waterways. Other portions, however, are a great example of the fine city of Runevale. Magitech is an everyday part of life in Runevale, Hexcross Bay included. Homes are lit by magical lantern, roads are driven by mechanical wagons and other magitechnological wonders.

Here is where the majority of visitors gain entrance to Runevale with sprawling roads and gates leading into the city.
References: League of Legends - Piltover https://www.newscientist.com/article/mg23931932-400-chinas-spectacular-rainbow-lake-disguises-trouble-below-the-surface/