The history of the town situated around the meeting point of the rivers Ploučnice and Elbe goes back as far as the Neolithic era. A burial ground from the La Tene era was found in the town quarter of Podmokly that attests the existence of a large settlement with a specific culture, which was accordingly named the Podmokly Culture. The inhabitants of the town typically pursued long-distance trade on the Elbe, and the main development of water transport occurred in the 19th century. At that time, the town saw an overall economic boom (textile production and later machine engineering), which is partially attributable to the owners of the Děčín estate - the Thun family.
Attractions The chateau towering on a cliff over the junction of the two rivers is the town's main landmark. It is also possible to visit the Rose Garden established in the 1670s. The rosary, which gave name to the entire garden, was established in the late 19th century. A part of the castle park has also been preserved and offers Romantic features such as a tunnel through the rock the castle is built on or suspended chain bridge – now a technical monument. The important monuments of sacred architecture include the Baroque Holy Cross Elevation Church from the late 17th century, the originally Gothic St. Wenceslas and Blaise Church, the Neo-Romanesque St. Francis of Assisi Church. Other interesting sights include the synagogue, the Renaissance stone bridge over the Ploučnice or the native house of Czech patriot Miroslav Tyrš. The historical water level gauge on the side of the Castle Rock, on which the river level has been marked since the Middle Ages, is a unique monument of European importance. Děčín is the starting point of trips to Shepherd Cliff (Pastýřská stěna), on which there is a lookout tower, restaurant and the ZOO) and to the hill of Děčínský Sněžník.
- Towns and villages