With transport easy from London along with ample short and long stay parking, tourists flock for a lush lunch and a leafy walk along the Grand Union Canal. A short looped walk will take you from the top end of the high street along to the castle (looked after by English Heritage, check the opening hours), and along the canal. When you reach a bridge, exit the footpath, walk through the car park and go into Woods. A garden centre tucked away at the bottom of the high street, it’s a haven of green, your senses overloaded by the scent of flowers the minute you walk through the door. Their selection is a decent size to cater for all types of garden as well as stocking gifts and homewares. Exit through their front door and you’ll find yourself back on the main high street and ready for another coffee.