Back in the day, when you could also blag a jump seat ride in the cockpit, nuclear plants used to do tours. Had a fascinating afternoon once in the Wylfa plant in Anglesey that included walking over the top and seeing the refuelling gear.
You can see both from a way along the coast; personally I think they add to the landscape rather than detract. The sea is also apparently noticeably warmer in the immediate vicinity due to the cooling outflow.
Two very knowledgeable guides led our group of 4 on a 3-4 hour tour of the facility, including the turbine hall.
https://www.edfenergy.com/energy/power-stations/sizewell-b#v...
Sellafield visitors centre was open until 2008 and only closed because of falling popularity and visitor numbers.
https://en.wikipedia.org/wiki/Sellafield#Sellafield_Visitor_...
(Yes that Sellafield)