Get ready to say “Grüezi” — Switzerland is reopening to fully vaccinated US travelers on June 28.

Although Switzerland is not a part of the European Union, it is part of the Schengen Zone and has been restricting access to travelers from outside the zone to limit the spread of COVID-19.

US travelers wanting to head to Switzerland this summer will need to be fully vaccinated and must have received their final dose of the COVID-19 vaccine at least two weeks before traveling. Proof of vaccination is needed to travel to Switzerland.

While vaccinated US travelers won’t need to be tested for COVID-19 or quarantine upon arrival, they will need to fill in an online form before entering Switzerland.

Other Schengen Area countries reopening to US travelers include France, Portugal, Spain and more.

A version of this article was previously published on June 14, 2021, and was updated on June 21, 2021, with more information.