You CAN actually find all your buldings in the town hall! There's a list of all professions and the number of workers and workplaces and behind that is a button that makes you switch trough all of the certain buldings like blacksmiths or whatever!

That page on the townhall is also great for locating all the spotss where you have placed buildings for construction and then possibly paused them.
I tend to start my town planning by putting down a ton of stuff and pausing everything, unpausing them one by one to get them built in the "right" order. That often includes a 2nd or 3rd forest node, and by the time I need those I've often forgotten where exactly I placed them so I use the townhall to cycle between all the stuff that still needs building to find them.