Just north of the Old Town, the Cultural Kilometre (Kultuurikilomeeter) is a footpath that runs through an intriguing stretch of post-Soviet, post-industrial Tallinn. It begins beside the Kultuurikattel (“The Culture Boiler”), a former power station now being converted into an arts venue. The power station’s iconic chimney is where Russian film director Andrei Tarkovsky shot key seasons of existential classic, Stalker. From here the path heads west past a small fishing harbour, and the Estonian Design House at Kalasadama 8, where young designers display and sell their wares. The path continues past the atmospheric old houses of the Kalamaja district before arriving at Patarei Prison Museum, a nineteenth-century fortress that was turned into a jail in 1920. Abandoned in 2004, it remains in pretty much the same state it was left in, providing an eerie, unsettling and unforgettable experience for visitors.