I am planning to stay for five days at Lauter brunnen. four days in Lucerne Can you suggest me how to go about it.
You can find a lot of practical guidance in the planning section of this website. Once you have a more detailed plan, feel free to post more specific questions here.
Also, these links are useful:
All you need to know about traveling by train, bus or car in Switzerland.
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Swiss Travel Pass promotion 25% discountOnly if purchased in July 2021. Free cancellation.Buy via the SBB travel centre at https://shop.switzerlandtravelcentre.com or HappyRail at https://www.happyrail.com/swiss-travel-pass.