Queen Sirikit Botanic Garden

This guide to the Queen Sirikit Botanic Garden in Chiang Mai follows the walkway itself, a four-hundred-meter glass-floored path suspended in the forest canopy, and the story behind it: a botanic garden founded in the early 1990s as Thailand's forests were vanishing, meant to save the kingdom's plants before it was too late. It traces how a modest project called Mae Sa Botanic Garden was renamed for Queen Sirikit's sixtieth birthday and grew into a thousand-hectare sanctuary of wild forest and glasshouses. Listen for what the garden holds beneath the glass as you cross it.