Tattershall Castle
- Fortified and moated red-brick tower, built in medieval times for Ralph Cromwell, Lord Treasurer of England. National Trust property page with information about opening times and facilities.
- http://www.nationaltrust.org.uk/scripts/nthandbook.dll?ACTION=PROPERTY&PROPERTYID=81

Lincoln Historic Cruise
- Offering information, timetables, photographs and prices for these 40 minute boat cruises from the centre of Lincoln.
- http://www.lincolnboattrips.com/