One of the most well known variants of the the Volkswagen Type 2 is the Westfalia. Commonly known as the 'Westy,' the Westfalia is named after Westfalia-Werke, the company that Volkswagen originally contracted to create the camper vans. These vans featured modified interiors designed for camping or overnighting. While Westfalia vans are commonly fitted with a "pop-top" roof that increased interior size, not all Westfalia conversions have this feature. The T1 generation Type 2 Westfalia was built until 1967 when Volkswagen introduced the T2 generation Westfalia.