Translation:Here is the way to our city's most beautiful avenue.
Avenue is usually a broad, straight street often with parks, but not always. I grew up near a residential street named "Lark Avenue" which only had the straight part. I currently live near another "avenue" which only has the parks, sorta.
At least Esperanto doesn't try to fill up our maps with lanes, and drives, and ways, and whatnot. They all, pretty much mean the same thing.
Which I, a now retired laborer in the field of (among other things) Civil Engineering, find disheartening. But my colleagues and bosses in that field are probably to blame. At least those on the Real Estate side of the business.
To be frank: An Avenue is supposed to be a broad thoroughfare, usually with a planted strip down the middle and (typically) high value properties along its length. But I currently have a friend who lives on an "avenue" which is a typical residential street, nothing down the middle, and a few boarded up homes along it.
"Street" is supposed to be just that. A stretch of road of indefinite length through an urban or suburban area. Usually no more than two lanes wide (with the definition of lane changing as automotive technology does). Generally located in the business district, but often radiating out from there.
"Road" is a generic "place intended to travel between points" and, until my father's generation was only used to describe routes between towns.
Way, lane and drive were either dirt tracks in the country, often connecting farms, or carriage paths on a private manor. "Way" is also a direction, "Go that way (path) to get to…"
So blame the realtors who have peppered our neighborhoods with "Smith Avenue"s and "Broad lane"s and "self aggrandized street"s for English's current sorry state of not knowing what to correctly call the pavement beneath our feet. But please don't blame Esperanto for your confusion. It's trying to get us back to "Right Way."
An avenue can be broad but in UK English it can be quite a narrow path bordered with trees. http://dictionary.cambridge.org/dictionary/english/avenue