[2] The new building, which integrates the station hall with the city's municipal offices, was designed by Mecanoo, an international architecture firm that originated in Delft.

[3][4] From 1964, the railway through Delft ran on a double track viaduct, created to eliminate level crossings, intending to improve the safety and fluidity of traffic through the city.

However, the rail viaduct became unpopular for being visually unattractive, and because the line through Delft is busy—with between 300 and 350 trains passing daily—causing major noise pollution.

In 2015 the decommissioned viaduct was torn down, and a second tunnel tube with two more rail tracks was constructed underneath the path it previously occupied.

Currently the tube with the third and fourth tracks is complete and the above-ground railway lines have been altered to join the extra underground rails.