These images show the 'radio tower' (public radio-listening facility) in Maruyama Park, Kyoto. It was erected in 1932 and is described in the NHK Yearbook as follows:
The photograph attached to its side shows park user gathered around the radio tower; they may have been listening to live commentary of baseball matches, which were very popular at the time. NHK, the national broadcaster, also set up a baseball scoreboard near the radio tower during the popular summer Kōshien tournament.