This castle remnant dates way back to the 13th century, which makes it an impressive monument. Enjoy a great view and the vineyards around.
Wikipedia DE http://de.wikipedia.org/wiki/Yburg_(Remstal)
Stuttgart Tourist Website http://www.stuttgart-tourist.de/en/a-y-burg-castle
Address Ruine Y-Burg, 71394 Kernen im Remstal, Germany
Coordinates 48°47'10.357" N 9°20'37.206" E