The White Cliffs of Dover is an iconic sight in the UK. The hike is approximately 8 miles (13 km) long, we could grab some snacks and enjoy a picnic with a great view. How to get there: We can take the train from St Pancras International to Dover Priory. The journey time is roughly 1h 5 minutes. The National Trust Visitor Centre is 1.8 miles away from the station.