Yes, tickets can typically be purchased on site, though it is advisable to check the gallery's official channels for specific opening hours and ticket availability, especially for guided tours.
For most historical sites like the New Velsen Gallery, direct ticket purchases at the entrance are common practice. This allows for flexibility for visitors who decide to visit spontaneously. However, during peak seasons, for special events, or if the gallery has specific capacity limits, pre-booking might be recommended to guarantee entry.
It is always prudent to consult the gallery's official website or contact them prior to your visit to confirm their current ticketing policy. Some sites might also offer online ticket purchases with a dedicated entrance or a slight discount. If you are planning to join a guided tour, checking availability and booking in advance is often highly recommended to secure a spot.