Europe
Even in a post 'Brexit' world, Europe is still on 'our doorstep!'
We have experienced these first hand; Belgium, Bosnia and Herzegovina, Croatia, Cyprus, Czech Republic, France, Germany, Greece, Hungary, Ireland, Italy, Luxembourg, Malta, Montenegro, Netherlands, Portugal, Serbia, Spain, Switzerland, United Kingdom, and the Vatican City.
Our normal point of entry to Europe is by air, but we have made extensive use of car ferries (Hull to Rotterdam and Harwich to Hook of Holland), plus the Eurotunnel (Dover to Calais).