Today, there are ruins of tombstones made of ceramics, which explains the name of the cemetery, Kerameikos.
Kerameikos is considered one of the more interesting sites in Ancient Athens, it can be reached by a short walk from the Monastiraki station.
In the cemetery, you can see recreations of ancient and fancy headstones that were placed here. The original headstones were moved to different museums around Athens. One of the museums is the small museum at the cemetery itself, where some of the original headstones are displayed.
The most impressive headstone is the Dionysius of Colitis, in the shape of the bull. Walk around the rows of graves in Kerameikos, and then go into the small museum, that shows some of the original headstones of the graves.