Dromberg looks great and Stonehenge is definitely far too crowded with tourists[0] but with respect to age Dromberg is considered to be 3000 years old [1] versus Stone henge being 5000 years old [2]
I will resist the temptation to joke about time travelling aliens
0 - Why do the tourists have so many Disney shirts, hats, and backpacks???
My attempt to answer question 0 - apart from the most obvious answer, that it's a global megabrand present in every culture that is connected with the global mainstram, so it's like asking why do so many tourists drink Coke and eat at McD's - underpinning a great deal of what Disney does creatively is a collective longing for myth, magic, mystery and timeless stories that reach back through the ages. People who like that kind of stuff (i.e. an awfully large percentage of humans) and who happen to be passing through that part of England will be inevitably drawn to those big ol' stones rising out of the mist...
