Pictures of buildings mentioned in the second edition “Suffolk” volume of “The Buildings of England” series by Sir Nikolaus Pevsner.

There are entries for Alderton Hall (in brackets so not seen by Pevsner), The Cedars, a derelict windmill and three Martello Towers with a reference to the Aldeburgh entry:
The Aldeburgh entry adds "The Martello Towers were built in 1810-12 by the royal Engineers as a defence against a Napoleonic invasion. They were designed by Colonel Twiss and Captain Ford. The name comes from a Torre della Martella in Corsica which impressed the English in the campaign of 1794".
One of the Alderton Martello Towers is shown here:
Stacks Image 5
and two more here:
Stacks Image 9