London and Paris are the two cities most first-time European travelers start with, and Amsterdam, Ireland and Switzerland are the natural next steps. They are also the most visited, so the plan matters: when to book, which neighborhood to sleep in, and which queue is worth skipping.
Start with the London and Paris four-day itineraries, then add the Eurostar, a week in Ireland or Switzerland by train if you have more time.
London and Paris are linked by the Eurostar in under three hours, so a week covering both is easy. Amsterdam is a short train from Brussels and Paris, and Switzerland rewards a rail pass and a mountain base.
Ireland is the exception: a car makes the trip, and driving on the left takes a day to settle into. A week is enough for Dublin, the west and the Ring of Kerry.
Start with: London itinerary, Paris itinerary
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