The document discusses several skywalks built in Taiwan to promote tourism while balancing environmental concerns. It describes skywalks in Hualien and Bagua Mountain, noting that the Hualien skywalk was constructed on an ancient road with minimal environmental impact and encourages visits to local markets, while the Bagua Mountain skywalk caused significant environmental damage and tourists lost interest quickly. In conclusion, the document emphasizes sustainable tourism development that considers both tourism and environmental protection.