Athens, Acropolis path, Greece

This wide and wonderful Athens pedestrian walkway - scattered with interesting modern art - stretches from the Temple of Olympian Zeus, around Acropolis hill [Areopagus Hill], past the ancient market place, past Thision metro[tube] station and up Adrianou to the Library of Hadrian and Monastiraki metro.
The walkway is a brilliant idea, looping comfortably around or near just about all the city's key sights, with greenery and funky little cafés aplenty.
It's about 4 kms [2.5m] long and mostly traffic free, though Athens seems to consider motorcyclist travellers to be honorary pedestrians and many regular sidewalks require constant attention if tourists don't want to fall down a hole.