Short answers, pulled from the story.
The decision to host the 1992 Summer Olympics in Barcelona was made on the 17th of October 1986. The city received 47 votes out of 85 cast by IOC members during a secret ballot held in Lausanne.
Paralympic archer Antonio Rebollo lit the Olympic cauldron at the opening ceremony of the 1992 Summer Olympics in Barcelona. He released a flaming arrow that landed safely outside the arena while igniting gas emanating from the structure below.
The Unified Team won the most gold medals at the 1992 Summer Olympics in Barcelona with 45 gold medals and 112 overall. This team consisted of twelve former republics formed after the dissolution of the Soviet Union.
Direct costs for the 1992 Summer Olympics in Barcelona reached US$9.7 billion expressed in 2015 U.S. dollars. This figure includes operational expenses like technology, transportation, security, catering, ceremonies, and medical services plus capital costs for venues and facilities.
NHK and Panasonic developed the 1/2 DX digital system to record the Games digitally for the first time during the 1992 Summer Olympics in Barcelona. On-screen text and graphics appeared in HDTV format for the first time ever while underwater cameras tracked along the bottom of swimming pools.