Photograph of the week: Lotte World Tower, Seoul, South Korea

Soaring 123 floors into the Seoul sky, the Lotte World Tower in South Korea may not be the tallest building in the world (it comes in as the world’s fifth tallest for the record), but it can boast three other, possibly even more impressive, ‘world records’.

One: it is home to the world’s highest glass-bottomed observation deck, at a vertigo-inducing 478-metres (1,568 feet) above a busy Seoul intersection. Situated on the 118th floor, if you find yourself with the courage (and trust in its engineers) to stroll onto this glass-floored treat for thrill seekers, you’ll be viewing the world from half a kilometre above ground.

Two: it boasts the world’s highest swimming pool, located on the 85th floor.

Three, and perhaps most thrilling of all, it is home to the world’s fastest elevator, which can zoom visitors from bottom to top – 555 metres up – in just one minute.

A sleekly tapered swathe of steel and glass, it is just as impressive…