Waterdeep

The largest city on the Sword Coast, it's leadership is comprised of multiple Lords, most of whom act as "hidden" - their identities remaining unknown to decrease the possibility of corruption.

Lady Laeral Silverhand, and her husband Khelban "Blackstaff" Arunsun act as some of the few open Lords of Waterdeep.

The town was suspected of being built up an ancient Ostorian settlement

The Yawning Portal
Known to have a portal to the Undermountain in its main chamber.

Shops
Corleons Horn - an expensive potion shop.