This is definitely a place worth visiting during your time in Novgorod. It's easy to get there. You can either catch a bus, which will drop you off right in front of the museum, or you can take a taxi. Both are easy and inexpensive.
The museum consists of a number of reconstructed, wooden buildings, most of which are furnished to show what life would have been like for those who lived in these places. Everything is represented in this model village - houses, churches, barns, and even a banya.
This place would be a wonderful place to visit with children, though we (two adults) enjoyed it immensely ourselves.
Do allow for about three hours to wander around the model village and to visit the formal museum (on the same site). And don't visit too close to closing time. The costumed babushkas who look after the buildings (and provide a Russian-language narrative about them, if you wish), will kick you out about twenty minutes before closing-time.
There is also a nice restaurant at the hotel across the street. It's worth a visit as well.
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