We will have limited time in Bergen before heading to Flam and beyond. Would love your must do / see for an afternoon and night in Bergen. Dinner recommendations also welcomed. Thank you.
For in-town (faster) options, I liked the KODE art museums in Bergen. I also spent considerable time just wandering around, admiring the nice architecture.
I went out to the Fantoft Stave Church. It's very attractive but is a total rebuild following an arson attack. Still definitely worthwhile if you have no other opportunities to see a stave church, but it also takes quite a while to visit. It's a considerable ride on the Bybanen light-rail system, heading toward the airport. Then there's a significant walk uphill to the church.
I unfortunately didn't have enough time to get out to the Grieg house, but I think that also involves a good bit of travel time. A concert out there seems as if it would be a good experience.
I would highly recommend the Bryggen Museum right on the waterfront. https://bymuseet.no/museum/lepramuseet/ In summer they have walking tours that include highlights of the museum and the historic buildings nearby.