The oldest record of the village dates back to 1352 and the time of its initial construction goes back into approximately the second half of the 13th century when the Markvartics founded the new castle Stráž. The castle was built to protect a trade route from Prague to Žitava that passed through Dubnice as well. The village belonged at the very beginning to the owners of Stráž estate which Bartoloměj Hiršpergár von Königshaim bought in 1504 and his descendants kept the estate till Bílá Hora (The battle on The White Hill) and after that it changed hands between many owners. In 1922 the whole Hartigov manor Stráž pod Ralskem, within which Dubá was included, was bought by František Melichar. Dubnice was a typical farming village producing mostly grain, potatoes and also fruit. During its history it met a number of catastrophes from famine via plaque stroke to several wars. At the end of the 19th and the beginning of the 20th century there was an economic expansion in the village. The peasants established a benefit club for pig breeding and one year later they opened a dairy from which a dairy complex soon grew. Later farmers’ machine and trashing cooperation in Dubnice was established. Roads were also built, which later opened connections to Jablonné, Stráž, Žibřidice, Janovice and Postřelná. During the First Republic a lot of local guilds sprung up, such as singing, theatre, sport, firefighters’ guild and traditional veterans. The closeness of Hamr na Jezeře resort ensured that after the First World War Dubnice started to focus on tourism and summer guests used the possibility of local speciality – milk treatments. After 1948 gradual decline of farming started and by the end of 1950 the last crafts and services stopped their activity. The Local Church of Virgin Mary’s Birth was built in 1699-1702 and the local stone cross comes from 1795. An unnamed stone chapel that was close to ruin, only wrecked and damp enclosure walls remained, was restored too. On the ruins new foundations with insulation were lain and a new chapel flourished here. Between two huge lime trees there is Niesig’s chapel – Chapel of Painful Mother that was rebuilt in 1738. Its author is not known – there is no sign on the chapel. At house no. 79 there is the Snowy Virgin Mary Chapel that is a part of a private property and is also called Lehmann’s chapel after the owner of the land Josef Lehmann. On the village fields there are also timbered cottages with a porch. Near Dubnice there is Hamerský and Horecký Lake and a few cycle trails are cross the village. One of them is called Silniční special Podještědím and the other one Za sv. Zdislavou, which leads to the Lemberk castle.