The Arctic-Alpine Garden is a specialist botanical garden in Chemnitz, founded by Walter Meusel and devoted to plants from cold, high, and difficult places. Its small scale is part of the charm: this is a collector's garden, not a municipal showpiece.
Plant-minded travellers will get the most from it, especially in flowering season when tiny alpine species reward close looking. Check opening details before going, since specialist gardens often keep more limited hours than city parks.