Although the concept first originated in the 17th century, it was the early 1900s when the first commercial air conditioner was made available. Although they're bad for the environment, and rarely needed in the UK, they are totally wonderful in hotter countries. I'm a big fan (sorry) of them, but obviously wish that someone would invent a more environmentally friendly version. These photographs have been taken around the world, but mainly, and obviously, the hotter countries !!

13421

13422

13423

13424

13425

13426

13427

13428

13429

13430

13431

13432

13433

13434

13435

13436

13437

13438

13439

13440

13441

13442

13444

13445

13446

13447