Second-home tourism is a very popular form of tourism in many countries, particularly in the Nordic countries. More than half of the Swedish population have access to second homes. Previous studies have revealed that there is great variation between different second homes. Examples range from rustic Australian shacks, lonely cabins in the Norwegian mountains, spacious Swedish archipelago villas and palatial Russian dachas. Still, second homes are often seen and analysed as a unitary category -a perspective that obscures the considerable heterogeneity within the category as well as spatial differences in the impact of second-home tourism. Using a second-home typology from previous research and data on about 660,000 second homes, we analyse the heterogeneity of second homes by mapping the composition of the Swedish second-home stock. Results show the uneven geography of second-home tourism, revealing significant and sometimes steep differences between peripheral areas and urban hinterlands, tourism hotspots, and areas in decline. Based on these results, we assert that there is good cause to move away from using second homes as a unitary category. Instead, we argue for viewing second homes as an umbrella concept with dwelling use in focus. This enables a greater sensibility to place and more accurate analyses of the uneven impacts of second-home tourism. The results also give greater insights into the impact of the 'invisible population' of second-home owners from a public planning perspective. M€ uller, Hall, and Keen (2004)) 提出的第二住宅分类 方法和660000份第二住宅数据, 把瑞典第二住宅的结构绘制在地 图上, 分析了其多样性。结果显示出第二住宅不平衡的地理分布, 揭示出边缘地区、城市腹地、旅游景区和衰落地区明显甚至是尖 锐的差异。基于这些结果, 我们断言这是一个放弃对第二住宅单 一分类的好理由。相反, 我们主张应该从居住用途上把第二住宅