All along the way we enjoyed very favourable opportunities for open-air preaching, and for disposing of large quantities of Christian books and tracts.1915, William Campbell, Sketches from Formosa, Marshall Brothers Limited, page 33:
Wearing his best suit and sunglasses, the sultan of Slowjamastan officially declared independence from the United States of America at 12:26 p.m. on December 1, 2021 as he broadcast the secession live from his open-air government “office” in Dublândia, the capital of the Republic of Slowjamastan.2023 June 8, Richard Collett, “He ran out of countries to visit, so he created his own”, in CNN:
1 more example
Secondly, preserved railways are not 24/7 operations. There are closed seasons where they can be turned into open-air classrooms.2024 April 3, Richard Foster, “Training the next generation of engineers”, in RAIL, number 1006, page 48: