Route in Tallinn for selected grade

Below the Pikk Hermann tower, you can climb up the rocks that are right next to the castle wall, which lead to the Kuberni Aed (gardens).

See https://www.google.com/maps/@59.4348142,24.7363332,3a,25y,45.48h,101.28t/data=!3m6!1e1!3m4!1sL4TwHHU_YPFMyzwCZru9SQ!2e0!7i13312!8i6656 for Google Streetview looking at the ascent.