was closed off. Demographics Sights Many of the discarded Czech and Soviet munitions were collected and are now on display at a little museum in Kuřívody. Only recently has the former military training area been opened as a natural reserve. On the Ralsko mountain there is a ruin of a Gothic castle. It has been desolate since the 16th century. There is a Renaissance castle in Kuřívody, formerly a fortress. References External links Cities and towns in the Czech Republic Populated places in Česká Lípa District