What is a question about this article? If the question is unanswerable, say "unanswerable".

Utrecht's cityscape is dominated by the Dom Tower, the tallest belfry in the Netherlands and originally part of the Cathedral of Saint Martin. An ongoing debate is over whether any building in or near the centre of town should surpass the Dom Tower in height (112 m). Nevertheless, some tall buildings are now being constructed that will become part of the skyline of Utrecht. The second tallest building of the city, the Rabobank-tower, was completed in 2010 and stands 105 m (344.49 ft) tall. Two antennas will increase that height to 120 m (393.70 ft). Two other buildings were constructed around the Nieuw Galgenwaard stadium (2007). These buildings, the 'Kantoortoren Galghenwert' and 'Apollo Residence', stand 85.5 and 64.5 metres high respectively.

What addition to the Dom Towerwill make increase its height to 120m?
unanswerable