Plan to spend 45 minutes to two hours at Tenryu-ji Temple, depending on your interest in its gardens and historic buildings, with a one-to-two-hour visit allowing for a relaxed exploration of the gardens and main halls. For a more comprehensive experience that includes other nearby sights like the Arashiyama Bamboo Grove, allocate at least half a day to the area. Focus on the Zen garden, the main hall, and the Sogen Pond for a good overview of the temple's key features. Take more time to appreciate the serene atmosphere, walk through the various parts of the garden, and explore the historic buildings like the main hall and Dragon Painting Hall.