Max and 99 seen playing ping pong against a backdrop of a Venetian canal.
Major city in Italy built on a group of 118 islands that are separated by expanses of open water and by canals [Wikipedia].
Venice is the third leg of a world ping pong exhibition tour undertaken by Maxwell Smart (disguised as The Masked Marvel), Agent 99 and Agent Samuels aimed at smoking out Kubacheck, the founder of third spy network ACB, who is a ping pong fanatic [Episode #85: "Die, Spy"].
[Episode #85: "Die, Spy".]