One of the most beautiful one-day trips out of Berlin is the town of Quedlinburg, located in Saxony-Anhalt (see: Magdeburg).
The best way to go there from Berlin is by regional train. The main departure station is Zoologischer Garten, near Ku-damm. Travel time is about three hours each way, adult passenger costs about 30 euros, experience justifies effort and price.
The walking route in Quedlinburg takes place entirely on foot in rather a small area. Therefore, it would be even better to combine it with the trip to Magdeburg.
Quedlinburg is a small picturesque town with a rich history, situated near the river Bode, on the northern edge of the Harz Mountains. Its population is about 27,000. It is regarded one of the most important tourist sites in Germany, and UNESCO has recognized it as a World Cultural Heritage Site, mainly because of a thousand or so unique stone and wood houses built in the 14th - 19th century. The town is overlooked by a medieval castle and monastery standing on a high hill. (Click here to get more information about the town's history).
Quedlinburg has two famous residents to boast: Dorothea Erxleben (1715-1762), the first certificated female-doctor in Germany, and the German poet Friedrich Gottlieb Klopstock (1724-1859).