The hill allows one of the best views of the Acropolis from anywhere in the city.
Reasons to go there
It has a wonderful rock outcropping down from the monument that gives a wonderful, quiet, serene view over the Acropolis and city.
You begin your walk in a park and wind along a tree-lined path up to the scenic outlook or monument further up the hill.
And: there are almost no tourists on this hill.
Helpful Tips
To walk up the entire hill to reach the monument will take approximately 20 minutes of good exercise.
There is no admission charge to enter the park. However it does look like the park is closed and not open to the public when you approach it.
If you are tired, and need to escape go to this hill and get in touch with the Muses. Its a great break from the crowds.
I recommend to compare hotel prices very well in Athens. Different booking sites have totally different prices for the same hotel. Maybe this site helps you. It compares more than 30 bookings sites at once.
How to get there
To find it, walk up Dionysiou Areopagitou street which possesses some of Athens finest neoclassical buildings and which reaches Apostolou Pavlou street.
Additional Infos
This hill got its name from the monument on its peak.
Philopappos Hill was also known as the Hill of the Muses or Mouseion and naturally it was dedicated to them.
Links
Photos of the Philopappos Hill
Compare Hotel prices of different booking sites

1Kameron Rios on Jul 23, 2008 at 4:05 pm:
What the park. Anyways, tomorrow we are planning to lay on a wonderful rock, and hopefully i dont burn again. However it is now a popular resting place for tourists, following your walk up a wonderful rock from the monument.