Quick 4 day trip around Jungfrau Region

Hi Gaetano! If you get to Milan first and rent a car there, this would mean that you'd miss out on part of Switzerland's public transport services, which provide a very comfortable and convenient way of travelling. Moreover, a car won't get you to many of the destinations you may want to visit in the Jungfrau region. Viewing points and some car free towns such as Wengen and Mürren can only be reached by cable car and train. So my advice would be to travel around Interlaken by train and bus and then to get to Milan by train as well. Whether you need a pass for discounts, depends on your exact travel plans. If you only want to discover the Jungfrau region and if you won't travel to Milan by train, you may want to take a look at the Jungfrau Railways Pass. This is valid for 6 days, however, and you'd have to be travelling quite intensively to really profit from its advantages, compared to its price. A Swiss Half Fare Card may be suitable as well, but this too depends on how long your journeys will be. A Swiss Half Fare Card will also be valid for a train journey from Interlaken to the Swiss border, when heading for Milan, so this might save you quite a lot of money. Calculations, based on your exact plans, will have to prove if a pass is cost effective in your case.