Countries I lived:
Netherlands - born & bred, lived here until I was 28
UK - lived here since 2009
UK & Ireland:
of which: -
Wales - visited about 10 times mixed work/private
of which: -
Scotland - visited twice (Inverness for work and Lockerbie privately)
of which: -
Northern Ireland - visited once, driving from ROI
Ireland - visited about 10 times (3 or 4 holidays the rest for work)
Western Europe:
Germany - visited so frequently I can't tell, more than 100 times
Belgium - visited so frequently I can't tell, more than 100 times
Luxembourg - visited here on many holidays and also work
France - visited here countless times as well
Monaco - visited once on holiday
Switzerland - visited here nearly 30 times for work and spent many youth holidays here with my parents, returned later for some trips as well
Austria - have spent at least 10 holidays here and several work trips
Liechtenstein - been here twice just to explore it
Southern Europe:
Spain - been here on holiday twice (Barcelona, Madrid) and a few times for work
Portugal - been here many times for work and holidayed in Lisboa, Sintra and Albufeira
Andorra - visited one driving back from Barcelona to the UK
Italy - only visited the north many times across the border from Austria & Slovenia and Milano & Venice for work
Greece - visited about 5 times for work and combined some holiday too (Thessaloniki, Athens and Crete)
Northern Europe:
Denmark - been here at least 20 times usually crossing through to Sweden but stayed around South Jylland, Falster and KBH.
Sweden - been here at least 30 times on holiday due to relatives and a dozen of times for work trips (used to work for a Swedish company)
Norway - been here three times on holiday and 7 times for work (mostly Oslo but also Bergen, never far north)
Finland - been here three times for work (Oulu, Helsinki twice)
Iceland - been here twice for flight connections to the US (could clearly see the volcanic black sand from Keflavik)
Baltics:
Estonia - visited once for work (Tallinn)
Latvia - visited once privately and once for work (Riga)
Eastern Europe:
Poland - visited about 7 times, private as well as work (Warsawa, Katowice, Krakow, Zakopane, Poznan, Lodz)
Czech Rep - visited about 7 times as well, mostly work and of course SCS! (Praha)
Hungary - visited about 3 times for work (Budapest and drove to Croatian border)
Slovenia - visited 4 times crossing through to Croatia (stayed once near Novo Mesto)
Croatia - visited 5 times, private/holiday (mostly Istria/Rijeka, Krk, Plitvice and Zagreb)
Bosnia Hercegovina - visited once (brief 2.5 hour crossing from Croatia to Bihac)
Middle East:
Turkey - visited 4 times for work (Istanbul only)
Israel - visited once for work (Tel Aviv, and Jerusalem & Dead Sea excursions)
Palestine - visited once near the Dead Sea
United Arab Emirates - visited Dubai for work
Africa:
Morocco - visited once on holiday
South Africa - visited once for work
Asia:
Japan - visited for work
Maldives - visited on honeymoon
Malaysia - visited on stop-over to Australia (Kuala Lumpur only)
Singapore - visited on stop-over to New Zealand
Oceania:
Australia - visited twice on holiday
New Zealand - visited for a month on holiday (wife is from here)
North America:
Canada - visited Windsor, ON and Niagara Falls, ON on different holidays. Toronto for work
USA, this requires a separate list:
2007 - Holiday trip to NYC [states: NY, NJ]
2008 - Holiday trip to Detroit & Canada followed by NYC [states: NY, MI]
2008 - Holiday trip to west coast for 4 weeks [states: CA, AZ, NV, UT]
2012 - Holiday trip to east coast for 2 weeks [states: NY, NJ, PA, DE, MD, DC, VA]
2012 - Work trip to Atlanta & Toronto [states: GA, TN, NC]
2014 - Holiday trip to west coast for 3 weeks [states: CA, AZ, NV UT]
2014 - Work trip to Florida & Las Vegas [states: FL, NV]
Mexico - crossed the border at Tecate whilst on holiday in 2008. Stayed about 1 hour.