The area around Altenberg was mined for over 550 years. During this period, more than 100,000 tonnes of tin were extracted, on both sides of the Saxon-Bohemian border, from one the world’s largest tin ore deposits. Important monuments such as the Wäsche IV (ore washer) in Altenberg, the mining installations in Zinnwald, Lauenstein Castle and Lauenstein Church are testimonies of mining, the technologies used, the administration and the connections between the areas under Saxon and Bohemian rule.