Electric, in the dark

Peering into the mouth of the Tunel Średnicowy, the railway tunnel that burrows under the heart of Warsaw from the western end of the platforms at W-wa Powiśle all the way across town via W-wa Śródmieście (suburban trains) or W-wa Centralna (long-distance trains) to emerge by W-wa Ochota, a mile and half (2.3 km) to the west.

Unlike London, Warsaw doesn't have termini beyond which no trains go - all trains pass right under the very centre of the city.

The line (for my non-Polish readers) was opened in 1933 and electrified (and here's a surprise) in 1936.