Lay of the Land

For those unfamiliar with Paris—or with how the city fits into the wider map of France—it helps to know about our layered public transit system, which is constantly being remodeled and expanded. The three main layers of rail travel here are the Paris Metro, the TER, and the TGV.

The Metro is without question the most iconic. Just saying the name conjures images of white-tiled tunnels with arched ads, and well-worn subway cars rattling through the dark while the Eiffel Tower’s spotlight swings its nightly arc over the city, keeping watch.

But the layer I want to focus on here is the TER—Transport Express Régional…