Record: 354 m
OKO is a complex of buildings located on plot 16 in the Moscow International Business Center in Moscow. The site is divided into two sections, 16a and 16b. "OKO" means "eye" in Russian, and is also abbreviation for "united by the foundation crystal" ("объединённые кристаллом основания"). OKO South Tower is the second tallest building in Europe.Website:http://oko-capitalgroup.com/