My family and I were denied the family admission rate at this museum because we are a same-sex family with two mothers.  
When we arrived at the ticket counter, the employee was about to charge us for two adults and two children instead of the family ticket. We politely pointed out that we qualified for the family rate, which would have saved us about €10.

Her attitude immediately became cold and dismissive. She insisted that the family ticket was only for “a mother and a father with two children.” She then asked us, “Where is the father? Are you the father?” We explained that we are a family with two moms, but this only seemed to make her more impatient.  
At one point, I asked her what the family ticket actually included. She answered, “Two parents and children.” Despite saying “two parents,” she still refused to recognize us as a family and insisted on charging us for an extra adult instead of applying the family rate.  
The issue isn’t the €10. What upset us was being told, in effect, that our family didn’t count as a family. The way we were treated at the ticket desk was honestly the most shocking part of the experience.

The museum itself was fine, but after we got home we checked the museum’s website. It clearly states that the family ticket is valid for **two parents or guardians** and their children. In other words, according to the museum’s own policy, we were eligible.

We submitted a formal complaint to the museum’s management, but unfortunately their response repeated the exact same reasoning as the ticket agent.

We’re sharing this experience so other families are aware and in the hope that the museum will align its staff and customer service with its own published policy.

Discrimination at Nikola Tesla memorial center, Croatia