Complex sentence: Other structures include a U-shaped (former) retail court, which has been altered with a new office complex added on one side, and a 12 story, 300 room hotel building that has been abandoned for almost a decade.
Split into simpler sentences: Other structures include a U-shaped (former) retail court, which has been altered with a new office complex added on one side. Also built was a 12 story, 300 room hotel building that has been abandoned for almost a decade.