On this roundtrip, we will be visiting Vadstena Castle, which was built by King Gustav I and was a royal castle until 1716. You will see the most mysterious and famous runestone in Sweden - Rökstenen, erected in year 800. We stop by Alvastra Abbey, a Cistercian monastery founded in the first half of the 12th century. We hike at Omberg - mountain, known to be most species-rich in Sweden - walk among giant oaks and more than 100 years old fir trees and enjoy the fantastic view from Hjässan - Omberg's highest point -from where you get to admire the beauty of Östergötland and lake Vättern.