"Ĉu vi vidas la altan turon je la fino de tiu avenuo?"

Translation: Do you see the tall tower at the end of that avenue?

[n0ot]

Why je in this case, describing where the tower is, but ĉe in the cases when you want to describe what location someone is at? What's the difference?

[russeladvincula]

I think "je" can be substituted for any preposition. It's for when there just isn't a correct preposition you can use, or (like in this case) you're too lazy to think of the correct preposition.

[Robert918848]

Both "je" and "ĉe" are correct.

[donaldo_zouras]

I just gave up on this one after listening 20 times... too fast for this beginner.

[OOO00OOOi]

i didnt find this too fast but i agree some of these are really too fast

[NotWaje]

Anyone else confuse altan with maljunan?

[mizinamo]

I think you mean malnovan - towers are usually "new" rather than "young" if they have just been built.