This original station was constructed with two side platforms, at a depth of just 2.7 metres (8 ft 10 in).

The approach to the station included a sharp curve disctated by the original layout of the square.

This diversion left an 80 metres (260 ft) long section of the original tunnel empty and walled off.

In the end, line M2 did not open until the 1970s, but in the 1960s further preparatory work led to the creation of a large-scale pedestrian underpass system under the square, which called in question the fate of the section of abandoned tunnel.

[2][3] The museum exhibits three vehicles, all from line M1 of the metro:[2][3] On the other side of the platform from the vehicles there is a display of relics, documents (including plans and maps), photographs and models, which represent the history of line M1 through its life.