The interactive map from flightradar24 above shows live flight locations for commercial civilian aircraft around the world.
When you zoom in on Syria you can see how airlines choose route their planes to avoid all Syrian and most Iraqi airspace.
The map above shows the incredibly strange and complex border between Belgium and the Netherlands at Baarle-Hertog (Belgium) / Baarle-Nassau (Netherlands).
The map above is an Isochrone map which shows how long it would have taken someone to travel from Rome to the farthest reaches of the Roman Empire at its peak (roughly 200 CE/AD).
Travelling within the core of the Empire could have be done in under a week, but travelling all the way to the fringes would have taken someone more than a month.