Which poem is known as a vision in a dream by Coleridge?

Kubla Khan, a Vision in a Dream, poetic fragment by Samuel Taylor Coleridge, published in 1816.
- According to Coleridge, he composed the 54-line work while under the influence of laudanum, a form of opium.
- Coleridge believed that several hundred lines of the poem had come to him in a dream, but he was able to remember only this fragment after waking.
Source: Britannica.com