"A guard stone, or chasse-roue, is a projecting metal, concrete,
or stone exterior architectural element located at the corner
and/or foot of gates, portes-cochères, garage entries,
and walls to prevent damage from vehicle tires and wheels"
Quoted from Guard Stone @ Wikipedia:
-> About Schanigarten at Wikipedia:
Schanigarten is the Austro-Bavarian term for tables and chairs set up on the sidewalk in front of eating and drinking places. Unlike normal beer gardens (Gastgärten), the customers actually sit on public property.