Dover has plenty of history that you can explore from a Roman house to the Castle high above the White Cliffs through to the 2nd World War.
The Tourist Information website is http://www.aboutbritain.com/towns/dover.asp
, and has links to all sorts of activities, hotels, Bed & Breakfasts, things to do (the list at the bottom, not the left) including animal parks, art museums, cinema, theatres etc.
Hope this helps,
Alan & Katrina
Last Cruise: Queen Victoria November 2014
Next: Queen Elizabeth December 2014
Followed by: Minerva April 2015
Golden, Grand(2), Caribbean, Sea(4+1 aborted)
Adonia(4+2), Arcadia, Artemis(2), Aurora(5), Azura(2), Oceana(3), Oriana(11), Ventura(2), Victoria(5)
QM2(2), QE2(9), QV(6), QE, Caronia(2), Minerva II, Fred.Olsen(8), NCL Jade, =X= Eclipse, HAL Ryndam, Aza.Journey