Legend
Ann, the girl walled into Helme castle

When Helme castle was built, the builders asked who would carry the town's keys. A farm girl agreed, and she was walled into the masonry with the keys and a promise: as long as the enemy did not know her name, the town would never fall. Her name was Ann, so the place was called Annelinn. Sieges failed as if fog hid the walls, until an old woman fetching water was threatened with death and told the enemy the name. The fog lifted and the castle fell.
Open it on the map See the spot on the old maps and as it is today
Eesti keeles
Helme linna ehitamisel küsiti, kes tahab linna võtmeid kanda. Üks talutütar lubas ja ta müüriti koos võtmetega müüri sisse tõotusega, et kuni vaenlased tema nime ei tea, ei saa nad linna ära võita. Tüdruku nimi oli Ann ja linna hakati kutsuma Annelinnaks. Piiramised jäid tulemuseta, nagu oleks udu linna ees, kuni vett tooma tulnud vana naine surmaähvardusel nime välja ütles. Udu langes ja linn vallutati.
Source: M. J. Eisen, 'Kodused jutud' no. 62, from E 12578/80 (J. Karu, Helme, 1894) ↗