Tsetserleg is the capital of Arkhangai, but it feels more like a mountain town than a provincial centre. The name means "garden", and the town earns it by sitting in a green bowl below Bulgan Mountain, with whitewashed monastery buildings above the market streets and open steppe starting almost as soon as the houses end.
The best reason to stop is Zayain Khuree, the old monastery complex that now holds the Arkhangai museum. A second active monastery, Buyandelgeruulekh, keeps the town's Buddhist life visible rather than purely historical. Above them, Bulgan Mountain gives a short climb and a wide look over the valley.
Tsetserleg also works as a base for the central Mongolian road trip: hot springs, nomad camps, volcanic country, and the curious standing boulder of Taikhar Rock are all reachable from town. It is not a polished stop, but after long distances across Mongolia it has the rare combination of a real town, good scenery, and enough culture to justify a full day.