Complex sentence: Weston's Music Hall was a music hall and theatre that opened on 16 November 1857 at 242-5 High Holborn, on the site of the "Six Cans and Punch Bowl Tavern".
Split into simpler sentences: Weston's Music Hall was a music hall and theatre that opened on 16 November 1857 at 242-5 High Holborn. The theatre was constructed on the site of the "Six Cans and Punch Bowl Tavern".