Baldur's Gate 3 is a large, open-world game that is as deep as it is wide. Some locations have multiple levels to explore and discover. A map exists to keep players from getting lost but, even then, there will be events and hazards in between spots that players want to get to.
Baldur's Gate 3: How To Place Map Markers
Most of the things worth finding in Baldur's Gate 3 aren't labeled on the map, so it's wise to place custom markers down for good directions.