Collecting all feathers and glyphs in Assassins Creed 2

I've completed the main Assassins Creed 2 story and now am trying to get to 100% synched. I can see all the other stuff on the map, but how can I find all the feathers and glyphs?

I don't really want to cheat too much! (i.e. use a walkthrough guide) - so is there something I'm missing in the game itself which would help me locate them? Or is it just a case of wandering around randomnly until they all turn up?

Without using walkthroughs:

• For the feathers, yes, you need to wander around until you find them.

• For the glyphs, check out the enciclopedia, the locations with an eye (red, as that means you haven't found it yet) contain a glyph, search around main buildings for it. They are not that hard to find (and the movie revealed is very interesting)

As others have said, and you probably know, using eagle vision is easier to spot feathers (and mandatory to activate Glyphs)

The Locations menu will show you which buildings have a glyph on them. As for feathers, it's just a matter of searching.

It is much easier to find the glyphs on the buildings, and the feathers, if you use your eagle vision.

A good tip on finding feathers is to wander on top of the buildings and activate your Eagle Eye!!! Everything becomes darker and the feathers will look white with little sparks glowing on top of them.

On the other hand, Glyphs are commonly hidden on high places. As @Macha said earlyer, The Locations menu will show you the buildings that contain Glyphs on them.