Carlisle is technically England`s biggest city by area. Straddling the doorstep of both the Lake District and Hadrian`s Wall, this modern 21st-century city has seen its fair share of history, at least 2000 years` worth. Its castle is one of the most impressive fortifications in England, and nearby visitors can find the beautiful cathedral worth visiting. Reminders of the past are evident in its great crimson castle and cathedral, built from the same rosy-red sandstone as most of the city`s houses. On English St, you can also see two massive circular towers that once flanked the city`s gateway. The city is now looked after by English Heritage ensuring that it will remain an interesting place to visit for many years to come.