What was most interesting to me on Ermou Street is the involuntary but perfect showcase of what good urban planning of a street can do to a city. Ermou is divided into two parts: the pedestrian part and the regular street-with-cars part. The difference is staggering. The pedestrian part is a nice shopping street which is a pleasure to walk in, while the other part is dirty and poorly maintained, and makes the city look like a dump (as do many other similar streets in Athens, unfortunately).
The pedestrian part though is a pleasure to walk through, and contains many shops including most of the popular fashion brands. There are some bars, diners and restaurants and a random one we ate in had excellent Alpha Beer (an Athenian brand). The atmosphere is as good or better than similar pedestrian streets elsewhere in the world. Most buildings are renovated because you can't have a posh pedestrian street with crumbling dirty buildings (except in my town).
You can walk along the street from Syntagma Square to Monastiraki Square (or vice versa), which is also close to the Acropolis and many other attractions in Athens.
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