Yerevan is a city with a very ancient history; even before our era, the Ancient Kingdom of Van was located here. And it is such an extraordinary feeling to be on the ancient land!
Walking around Yerevan is a pleasure: there are many parks, squares, a fairly green city. At https://onewaytour.com/ you can book a tour.
We visited the Cafesjian Museum - an open-air art center. This is something I've never seen before! It is located on the territory of the Cascade complex. There are so many interesting compositions (for example, a sculpture in the form of a teapot)!
By the way, the sculptures in the museum were created by famous artists from all over the world. There are sculptures from Copenhagen, Britain, there are paintings by Marc Chagall, admission is free. Concerts, lectures, exhibitions, festivals are organized. I don't even know where else you can find something like this. There are many museums in the city as a whole.