Помогите пожалуйста What Moscow attractions are described ? 1.It was the

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What Moscow attractions are described ?

1.It was the World's tallest structure from 1967 to 1975 (surpassed by the Canadian CN Tower in 1976). Its height is 540 m, and it contains 3,544 stairs. It was constructed to mark the 50th anniversary of the October Revolution. It is named after the district of Moscow in which it is located.
2.It was opened in 1939 to present the various achievements of the Soviet national economy. By 1989 the Exhibition had 82 pavilions. Each pavilion was dedicated to a particular industry or a field: space, education, radio-electronics, culture etc.