Modifications included the addition of the second floor observation plaza, and a planned "permanent" exhibit of replicas of the Royal Crown Jewels of Britain, drawing over 330,000 people in its first year. This exhibit lasted until 1973 when, citing lack of visitors, it was removed. A 25 cent admission fee to the observation plaza was removed the following year. Parking for Table Rock House was originally on the river side of the building which, due to the increased use of the automobile, became a hindrance. A major road design re-routed the Niagara Parkway to the west of the building in 1973, which provided a pedestrian environment between Table Rock House and the Horseshoe Falls.