A wire <a href="https://en.wikipedia.org/wiki/amateur_radio" class="extiw" title="en:amateur radio">amateur radio</a> <a href="https://en.wikipedia.org/wiki/antenna" class="extiw" title="en:antenna">antenna</a> suspended above an apartment house in France, in 1912.  This type is called an <a href="https://en.wikipedia.org/wiki/inverted_L_antenna" class="extiw" title="en:inverted L antenna">inverted L antenna</a>, and is widely used in the <a href="https://en.wikipedia.org/wiki/longwave" class="extiw" title="en:longwave">longwave</a> (<a href="https://en.wikipedia.org/wiki/low_frequency" class="extiw" title="en:low frequency">low frequency</a>) radio band, which was the most widely used band during the <a href="https://en.wikipedia.org/wiki/wireless_telegraphy" class="extiw" title="en:wireless telegraphy">wireless telegraphy</a> era at the beginning of the 20th century.   It consists of a number of parallel horizontal wires like a clothesline, suspended by insulated supports at each end, with vertical wires connected at one end <i>(right)</i> dropping down to the transmitter.  The vertical wires are the <a href="https://en.wikipedia.org/wiki/driven_element" class="extiw" title="en:driven element">radiating element</a>; while the horizontal wires serve as a capacitive top-load, to add capacitance to the antenna, to increase the current in the vertical element, and thus the radiated power.
Unknown photographer
Société de TSF française à Juvisy-sur-Orge. Scanné par <a href="//commons.wikimedia.org/wiki/User:F1jmm" title="User:F1jmm">F1jmm</a>