Do I need a Schengen visa?

My nationality Obligation to hold a visa (yes/no)
Poland  no 

Detailed information can be found on the German page.

Other nationalities

For other nationalities, please refer to the list on the webpage of the State Secretariat for Migration (SEM).

SEM – Overview of ID and visa provisions according to the nationality (Annex 1, List 1: nationality)

If you are obliged to hold a visa, please apply for it and refer to the information on the webpage:

Where to apply for a Schengen visa?

If you are not obliged to hold a visa, you are allowed to enter Switzerland resp. the Schengen territory and stay up to 90 days within a 180-day period without any visa.