Complex sentence: On August 1st 1898 the Public Library burnt down, on the same date, August 1st, in 1970, the large department store "Garlands" on London Street was devastated by fire.
Split into simpler sentences: On August 1st 1898 the Public Library burnt down. On the same date, August 1st, in 1970, the large department store "Garlands" on London Street was devastated by fire.