Active Directory's Find… function is pretty handy: by searching from the directory root or any OU, you can search for specific objects by name, etc.
Unfortunately the search results display is a bit barebones and it's never obvious to a non-AD admin like me how to determine where the object actually lives in the hierarchy. Luckily you can drill into a search result item to view an object's properties but unless you're a real AD keener, you still might know how to find the object's location.
To rectify this situation, you'll need to turn on the Advanced Features setting from the Active Directory Users and Computers snap-in's View menu:
The object properties display will now include an Object tab which contains the Canonical name of object field (in other words, the path to the object within the directory):