for the forested hills that rise to the north and south of the town and fjord. The valleys of the two rivers that converge at Vejle are both unique in Denmark: Vejle River Valley (Vejle Ådal) is the longest tunnel valley in Denmark, and the Grejs Valley (Grejsdalen) is the largest ravine in Denmark. Both empty into Vejle Fjord, which connects Vejle by water through the Little Belt strait to the Baltic Sea, and through the Kattegat and Skagerrak straits to the Atlantic Ocean. Neighbourhoods Many of Vejle's neighbourhoods began as separate towns or villages that merged with the city as it grew. Søndermarken, Nørremarken, and Grejsdalen, however, were all founded as extensions of the city onto the surrounding hillsides. Vejle's neighbourhoods include: Vejle centre Bredballe - east of downtown and north of Vejle Fjord; considered an affluent neighbourhood Grejsdalen - northernmost part of the city, located in the long, narrow valley of the same name Hover - west of Grejsdalen, closer to the centre Lille Grundet - north of downtown in the northwest corner of Nørremarken, relatively new Store Grundet - established in 2000, north of Lille Grundet Mølholm - southeast of the centre Nørremarken - northeast of the centre, including the North Woods (Nørreskoven) and Vejle Stadium Petersminde - on top of Uhrhøj, west of Grejsdalen Vestbyen (West Town) - western Vejle, including Skibet and Trædballe, and the scenic overlook of Himmelpind Vinding - southeast, next to Mølholm Søndermarken - to the southwest, located on land belonging to the former Petersholm manor Economy Vejle is the cultural and economic centre of Vejle Municipality and, as part of the unofficial Triangle Area (Trekantområde), is rich in industry, business, and the service sector. Historically speaking, industry has been very important for the city's development, while today more weight is placed on business and service, as well as high-tech firms. Industry During the Industrial Revolution, Vejle was known as the "Manchester of Denmark" due to its extensive textile mills. The local rivers provided water power to mills, including the extensive facilities of De Danske Bomuldsspinderier (The Danish Cotton Mills). In the first half of the 20th century, Vejle was something of a behemoth within the Danish textile industry, with some 25% of the city's workers employed in the industry. Despite the decline in the industry in Denmark, the last cotton mill in Vejle remained open until 1993. Today, many of the