What to see in Gyumri in terms of attractions?
Gyumri is small, you can see everything quickly, there are different locations depending on your preferences, you can go hiking to the nearest monasteries and waterfalls, there is a famous fish restaurant Cherkezi Dzor.
If you have kids, there is the museum of illusions, a small and very Soviet park, a ceramic workshop Varem-Marem next to the famous balcony from the movie, their wall is a crossword and a dog Aslan.
The Black Fortress, the center is all in the architecture of the royal times...