One of the classic tourist destinations, the Eiffel Tower in Paris, is the most instagrammed attraction in Europe. What’s left of the wall that once divided the German capital Berlin into East and West is the second most tagged tourist spot. Big Ben in London makes third place. There’s a little generational bias in this data because, “Instagram is a barometer of where Millennials are traveling,” as the source points out. Then again, the younger cohorts seem to be traveling where everybody else is going.