Arcanum Worlds (who's also behind that Odyssey of the Dragonlords kickstarter), a group of ex-BioWare folks including the lead designer of Baldur's Gate I and II (James Ohlen), just put up their Heroes of Baldur's Gate adventure on DMsGuild: https://www.dmsguild.com/product/269398/Heroes-of-Baldurs-Gate-5e
It's set in and around Baldur's Gate (obviously), with extensive city and region maps, and features some classic NPCs. PDF version is $20, hardcover is $45, and bundle of both is $55.