Topographic map
of Genoa

Genoa is squeezed onto a thin coastal strip where the Ligurian Apennines drop almost straight into the sea, its old town climbing in stacked alleys the moment it leaves the harbour. Barely any flat ground separates the port from slopes that rise past 1,000 m within a few kilometres inland.

The ridge of the Righi rises directly above the historic centre, ringed by the seventeenth-century walls that traced the high ground, while Monte Fasce and the Ligurian Apennines climb toward 1,200 m behind the eastern quarters. On the map the coastline is a hard edge and the contours pack immediately into steep parallel bands, cut by the short, deep torrent valleys — the Bisagno and Polcevera — that split the city.

How this map was made

Every contour line traces a constant elevation drawn from the public GEDTM30 30 m bare-earth terrain model, extracted with a marching-squares algorithm at a 50 m interval and coloured by height — cool blues in the valley climbing to warm reds on the summits. The satellite base layer and the contours share the same Web Mercator projection, so the lines fall exactly on the ground they describe.

You can regenerate this exact view — and change the interval, colours, resolution or export it as a print-ready SVG — directly in the TopoLines editor.