the veranda of Kiyomizu Temple
Refers specifically to the famous wooden stage of Kiyomizu-dera in Kyoto, known for its height and the historical practice of jumping from it. Often used in the set phrase 清水の舞台から飛び降りる (to take a leap of faith).
See also: 清水の舞台から飛び降りる
The veranda of Kiyomizu Temple is one of Kyoto's tourist attractions.
He said, 'I'll do it as if leaping from the veranda of Kiyomizu Temple.'