Many Olympic venues are left to decay after the events are over. See what these cities have done with the facilities after their games ended.

From Rio to Athens, these Olympic arenas, buildings and villages from around the world lay abandoned. See eerie photos from the inside.

There are 206 National Olympic Committees worldwide, which are devised by the IOC and the International Sport Federation. These two organizations are the sole authorities who come together to recognize NOCs for the official Summer and Winter Games.