No, tickets are not required as it is a free, open-air public art exhibition; therefore, no tickets can be purchased on site.
As the 'Open Amstelveen Cathedral' is an open-air public art display, there is no physical entrance or ticketing counter. All artworks are freely accessible in the public domain of Stadshart Amstelveen. Consequently, there are no tickets to buy, either on-site or in advance.
Visitors can simply arrive at the Stadshart Amstelveen area and begin exploring the art at their leisure. This removes any barrier to entry, making it highly accessible. Information about the artworks may be found on local signage or through online resources provided by the municipality or local cultural organizations, but not via ticket purchases.