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 converted into a concert venue. The power station’s iconic chimney is where Russian film director Andrei Tarkovsky shot key scenes of his existential classic, Stalker. From here the path heads west past a small fishing harbour, and the Estonian Design House at Kalasadama 8 (westoniandesignhouse.ee), 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 (May–Sept daily noon–7pm; €3), 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 experience for visitors.