Nachtcollege is a great event at the Effenaar where they bring the best house & techno artists. Added is a great laser and visual show to make it even better. Cool thing is that Effenaar got a licence to be open till 06:00 in the morning. So basically you can party all night from 23:00 till 06:00. Entrance is € 19, tickets are available online. The event is almost sold out so grab those last tickets quickly.