Bailiffgate Museum & Gallery, a small volunteer-run museum in Alnwick, has been named the UK's most family friendly.
Judges for the annual award from Kids in Museums said Bailiffgate has a "relaxed atmosphere" that put it above the rest.
It displays information at child height and offers lots of hands-on activities, incuding a Viking camp.
"Bailiffgate Museum & Gallery has excelled in allowing families to feel free to be themselves and to have fun and engage with the history inside the museum," Kids in Museums President Philip Mould said.
Three London museums - the Postal Museum, the Horniman and the London Transport Museum - were also recognised for their accessibility to families.
The National Museum Wales and The Whitworth in Manchester were honoured for their digital activities.