Waterdeep

The City of Splenders
is the most important and influential city in the North and perhaps in all Faerûn. Waterdeep was named for its outstanding natural deep-water harbor, and the city that grew up at this site became the commercial crossroads of the northern Realms. More than 100,000 people made their home in Waterdeep. It is a large city that is split into wards such as the Seaward, the Northward, the Castleward, the Docksward, the Tradesward, and the City of the Dead. Waterdeep is a metropolis to humans and an abundance of races. There are taverns spread across the city to suit every type of traveler, and Temples scatter the town for the many different religions, both good and evil.

At least Two other Adventuring Parties operated out of Waterdeep, those being The Black Lodge and Grey Force.

Mystic Obscura in Waterdeep
Mystic Obscura resided in a tavern located in the Castleward called the Eagle And Priest Tavern. At the return of their most recent quest (Session 5) they learnt that their usual Tavern is under construction and have made a temporary home at The Blue-Tailed Mermaid, located in the Dockward.

The group eventually were forced out of Waterdeep by Xanathar, who sent the Black Lodge after them, upon learning of their messing in his business with Drada and The Molten River Clan. The group returned upon defeating the Black Lodge, learning Lady Ada Mistborn had killed her and Eloithe's father, and that Xanathar wished to meet.

In the meeting, Xanathar released Emmalee Forester back to the group, and asked them to take care of Dissumusk down in Skullport, in exchange for Adrie's artifact back. The group were arrested and held, accused of killing Eloithe's father, but were eventually freed by Jarlaxle, a drow elf captain who wanted to help them, for all the good they were doing. Around the same time, a young gold dragon had moved into the bay, looking for something under the water. The group eventually left Waterdeep, instead heading North to find the Giant Harshnag.