Practical info


Complexity is a platform that celebrates adventurous and boundary pushing heavy music in the Patronaat venue in Haarlem, NL. Besides presenting several club shows throughout the year, we host our very own festival on a yearly basis. Complexity is founded in 2016 and presented acts such as Devin Townsend, Ihsahn and Bong-Ra. “Complexity knows that everyone who has played this weekend isn’t about selling out or doing anything by numbers. It’s about passion, heart and a pioneering spirit.” – Metal Hammer (2018)


You should always purchase your COMPLEXITY FEST and PRESENTS tickets through our official vendor Ticketmaster. You can find them on their internet page or a link on our website or on the website of Patronaat. Be aware of secondary ticketing websites and scammers that attempt to scam people into buying fake, void or overpriced tickets. Always check the people or business who is selling you the ticket, in particular on website as Facebook, Ticketswap and Viagogo.


Patronaat - Zijlsingel 2 - 2013 DN Haarlem - The Netherlands


The venue Patronaat is a 10 minute walk from Haarlem train station. Also busses 2, 3, 73, 81, 300 and 340 will take you close to the venue. Coming over straight from the airport? Bus 300 will take you from the airport to the Haarlem city centre the quickest. Traveling by car? There's a big parking garage close to Patronaat Haarlem, follow signs to 'Raaks'. It's open 24 hours, and there's an evening rate at € 2,84 for the entire night (starting at 19:00).


Patronaat is a Pin Only venue and therefore it is only possible to pay by debit card inside the venue. Only common Creditcards are accepted.


As a visitor you are allowed to bring and use compact cameras, GoPro video cameras or something similar as a phone, but selfie sticks are not allowed at the festival. You are not allowed to bring, DSLR cameras, larger video cameras, tripods and monopods, audio or any other kind of recording equipment into the venue if you are not accredited as press.


COMPLEXITY FEST and PATRONAAT are safe and free spaces for everyone. Treat others like you want to be treated yourself, take care of each other, and follow the instructions from the Patronaat staff.


For questions, press inquiries or you want to suggest your band to play our fest, e-mail complexity [at] patronaat [dot] nl