Highlights: Walden became famous in the book "Walden" written by American philosopher and author Henry David Thoreau. Thoreau built a log cabin by the lake and strictly controlled his daily necessities and contacts with others. Then he lived here for two years, two months and two days to complete this masterpiece. Many people come here to visit Walden Pond, the lake is really as pale blue as the author said, and thick ice forms in winter. A plank road for sightseeing has been built by the lake, and the surrounding is very quiet, like a paradise.