Erzincan's Grand Mosque is a central working mosque rather than a heavily touristed monument, but it gives visitors a grounded look at the city beyond its mountain excursions and day trips. Its value is partly architectural and partly civic: it sits within the everyday rhythm of central Erzincan.
Visit respectfully outside prayer times if you want to look inside, and keep the stop brief unless you are specifically interested in modern Turkish mosque design. It pairs naturally with a walk through the surrounding centre.