Im 29 years old engineer working 2 weeks on 2 weeks off. I am planning on visiting as many countries as possible on my time off. I like to gather a group for my trips so it would be more fun and hopefully cost effective. I would like to visit mainly European countries but am still interested in other countenance as well... I'm open to suggestions. I would prefer to have a late 20s and early 30s group between 5 to 10 people... Hopefully half of them are girls.