Contact us!

our location


The cosine head office is located close to the A44 highway that connects Amsterdam and The Hague, 20 min from Amsterdam Schiphol Airport, and close to the Sassenheim train station with direct trains to Schiphol, Leiden, Amsterdam and The Hague.

Oosteinde 36
2361 HE Warmond
The Netherlands

Coordinates: N 52.210858 • E 4.510023


By car

Use the A44 motorway linking The Hague and Amsterdam, and take exit 4 (Warmond).

If you are traveling towards Amsterdam, at the end of the ramp make a right, and then go right again past the bus stop to reach the Business Park.

If you are traveling towards The Hague, at the roundabout take the first exit, cross the A44, and then take the first right after the bus stop to enter the Business Park.

As you enter the Business Park, pay attention to drive into the second parking lot on the right. The cosine building will then be in front of you. The entrance is on the right corner.


cosine is a 15-minute walk from the Sassenheim train station.

The station is located on the Amsterdam-Rotterdam line, and can be easily reached also from Leiden, The Hague, and Schiphol. Most of the day there are two trains per hour in both directions, with additional services around the morning and evening rush hours. Please note that trains that stop at Sassenheim train station are of the category Sprinter and not Intercity. If you take an Intercity service you will have to change trains at Leiden Central Station.

Once at the station, reach the Wasbeeklaan, located on the side of the railroad opposite the motorway, take the first right, follow the road to the end, where it joins Oosteinde. Make a right, and after 200m make a left into the Business Park.

Alternatively from the train station you can catch bus 50, direction Leiden, for one stop to Warmond-Viaduct.


Take the 50 bus line Leiden-Harlem, and get off at the stop Warmond -Viaduct from the entrance of the Business Park.

Follow the road and walk into the large parking lot on the right. You will then be facing the cosine building, that you can enter from the right corner.

If you have problems finding us, entering the parking place or entering the building please call us at 071 5284962.