Geograph - photograph every grid square

If you are feeling energetic you can climb about 2/3 the way up Boston's famous landmark - the tower of St Botolph's church, known as The Stump.
There are over 200 steps to ascend to the gallery, and slightly fewer (but still over 200) to descend via a different staircase. The spiral staircases are in two halves each of about 100 steps, the higher rise being far narrower than the lower one. The rise and pitch of the individual steps varies and my thigh muscles were complaining by the time I got to the gallery ! As the tower is 272' tall, the gallery must be at about 180' elevation.
The views from the gallery are excellent, and apparently on a clear day such as this can be over 30 miles over the surrounding very flat countryside. At the time of our visit the northern walkway was closed off as the parapet wall was damaged - and you really wouldn't want to plummet from this height I can assure you!

The River Witham is a 82 mile long river, almost entirely in Lincolnshire. It rises south of Grantham close to South Witham, passes Lincoln and Boston, finally flowing into The Haven, a tidal arm of The Wash. The river is navigable from Lincoln to Boston.
Wikipedia: Link