How to reach the Castellum Building, Entrance C, Loire 150

By car

From the direction of Amsterdam (A4) use exit 8, Leidschendam/Forepark - Leidschenveen. At the end of the exit turn right at the traffic lights, crossing the motorway. At the first junction, turn right again at the traffic lights. The Castellum is on your left hand side. Take the third exit off the roundabout and immediately turn left entering the site. You will find us on the Loire at entrance C, The Synthesium.

From the direction of Utrecht (A12) Rotterdam (A13) or Den Haag (A12) on junction Ypenburg follow the direction of Amsterdam. On junction Prins Clausplein follow exit Leidschendam/Forepark - Leidschenveen (8). At the end of the exit, go straight ahead at the traffic lights. The Castellum is on your left hand side. Take the third exit off the roundabout and immediately turn left entering the site. You will find us on the Loire at entrance C, The Synthesium.

Public transport

From The Hague Central Station (RandstadRail)

  • Take HTM-tramline 3 or 4 in the direction of Zoetermeer from the tramplatform at The Hague Central Station or
  • Take the RET-Erasmusline in the direction of Rotterdam Hofplein, which leaves from the same level as the trains (rail 11 and 12)
  • Leave the tram at the Forepark stop, and walk along the road towards your left. The Castellum is situated to the right hand side of the roundabout.


    • From Rotterdam Central Station
  • Go to Rotterdam Hofplein via bus 38 in the direction of Crooswijk and get out at stop Pompenbrug or
  • Walk via de Weena in the direction of the large roundabout with a fontain (10 minutes). The stop Hofplein can be found on the other side of the railway track.
  • Take the RET-Erasmusline in the direction of The Hague.
  • Leave the tram at the Forepark stop, and walk along the road towards your left. The Castellum is situated to the right hand side of the roundabout.
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