Earth > Europe > Western Europe > Switzerland > St. Margrethen
Coming from St. Gallen, the border crossing in St. Margrethen is a good spot for hitching further on. If you don't happen to get dropped off here by your driver just make your way there on foot. Walk across to the Austrian side and hold out your sign to wherever you want to go. There's enough space for cars to stop, quite a considerable lot of traffic and due to the border being a non-EU one cars have to slow down anyway (although this will stop soon as Switzerland entered the Schengen area).