If you get off the Jiriho z Podebrad station you can just follow what you see. The tower is very very tall:) I love it. Not many turists know about it so it has always the quiete and intimate atmosphere. You can go to the top and the view is fantasticAnd there is restaurant with Czech cuisine, delicious, and café, if you fancy just a drink or coffee. What I recommend is to have a look while there is still daylight, then go and have a dinner and go back to the top. However while you are eating in the restaurant the view is right in front of you anyway as the walls are from glass. beautiful.