Two small chapels in East Devon - one an 18th century non-conformist thatched building tucked away in a fold of the hills, with original box pews, and the other the only chapel in England owned by the Canadians. Wolford dates from 1802 and has an interesting interior with lots of heritage decorations to explore. Both have unusual histories.
There isn't any walking involved at either, but parking is limited at both so we'll be using shared cars.
Both venues have lots of opportunities for interior details, and both are quite dark, so you may wish to use a tripod (carefully as there will be several people nearby!), or perhaps a beanbag would be safer. Loughwood has a graveyard with interesting headstones too, but it's quite rough underfoot.

Loughwood Meeting House and Wolford Chapel
Meet at Millers' Farmshop (Gammons Hill, Kilmington, Axminster EX13 7RA) for coffee, then we'll take a couple of cars to Loughwood and spend an hour or two there, returning to Millers for lunch.
Then we'll head west to Wolford and spend as long as everyone wants there. Parking for 3-4 cars so some may need to return to Millers at the end.
Neither venue was built with accessibility in mind, and Loughwood especially has uneven flagged floors and is quite lumpy outside. Wolford should be manageable if you have limited mobility.