Vlatadon, or Blatades, is the monastery to see if you want to understand why Thessaloniki's upper town is the city's loveliest part. It sits against the old Byzantine walls, near the Eptapyrgion fortress, and it was founded in the 1360s by two brothers named Vlatas, with a church that mixes the brick and stone of the Palaiologan style. The monastery has been a centre of church learning for centuries and still houses the Patriarchal Foundation for Patristic Studies, so you may find priests and students crossing the courtyard with books. It is a place where life continues.
The history is a good one. The monastery was founded when Thessaloniki was in decline and under pressure, and the Ottomans took the city in 1430, yet the monks kept the building through most of the occupation. A tradition says Paul preached to the Thessalonians on this very hillside, and the monastery was built on that spot. Its walls and the garden at the front frame one of the best views in the city: the Thermaic Gulf stretching out below, the port, the white tower, and on clear days the huge shape of Mount Olympus floating on the horizon.
To get there, the old town hill is the challenge. Roads climb past Tsimiski and Kassandrou in steep, narrow turns, and the last stretches are quite tight, with cobbles and sudden gradients. A motorbike has the advantage of squeezing into small spaces, but remember that the road surface can be rough and that buses squeeze by with inches to spare. Avoid hot afternoons, when the stone reflects heat. Walking the last two hundred metres may be wiser than riding, and the shaded lane has a wonderful scent of pine and jasmine in spring.
Fuel is found along the avenues at the bottom of the hill, and any number of small shops will supply bottled water. The monastery's visitor hours are limited, and it is not a place for loud conversation or shorts, so cover your shoulders. A cafe near the walls offers an excellent view over the roofs, and the owners will not mind if you linger over a frappe. Come in the late afternoon if you can, when the evening light hits the white walls and the gulf turns copper, and wait for the sunset.