Petrin Hill (Petrinska Rozhledna) is a popular place for both tourists and locals to come and take a stroll.One of the best views of Prague can be had at the Observatory Tower a the hill. A relic from the Jubilee exhibition of 1891, it is said to be a quarter of the height of the Eiffel Tower.Conveniently situated lose to Prague Castle.Petrin Hill also has a historic church dating from the middle ages.