Like I said, it depends on how you define "dungeon crawl". If being in a set location qualifies as a dungeon, then the local tavern and the street outside could be a dungeon.
In other words, I don't think of (as one random example from my wife's campaign) pursuing the bad guys down to the sewers made it a dungeon crawl, it was just that we were tracking the bad guys and that's where they went. Now if we had heard rumors that there were treasures in the sewers of an abandoned village and those sewers were filled with a variety of monsters, traps and hazards then it would qualify as a dungeon crawl.