The EU is sort of like Quito, Ecuador for Americans in that you don't need a EU visa to enter there for 1 or 2 months I believe

OF course the last time I was in the EU, Great Britain was still a part of it in 2011 when I visited England and Scotland with several members of my family then. But, I believe even though Great Britain because of Brexit is no longer a member of the EU you still can enter the EU with a Valid U.S. Passport with no visa for one to two months. This just seems to be a part of their policy towards U.S. citizens who bring tourism and a lot of money to the EU countries.