After the European Union recommended, on Aug. 30, that member states not allow entry to nonessential travelers from the US because of the increase in COVID-19 hospitalizations in the US, some EU countries strengthened entry requirements for, or began outright denying, US leisure travelers.

New requirements have typically included proof of a negative COVID-19 test taken before arrival and quarantining after arrival. Many countries were also denying entry to unvaccinated Americans...

On the short-term-rental website Fairbnb (fairbnb.coop), each property listed must conform to a set of ethical rules so rentals are not harmful to communities.

Each person renting out their house, apartment, etc., on Fairbnb must meet strict criteria, such as owning no more than two homes in their city and properly following local short-term-rental laws. Local representatives vet the owners and properties before any rental can be listed, and neighborhood residents and businesses can...

An expansion at the art museum Kunsthaus Zürich (Heimplatz 1, Zürich, Switzerland; phone +41 44 253 84 84, www.kunsthaus.ch/en) was scheduled to open Oct. 9, 2021. With the expansion, Kunsthaus Zürich will be the largest art museum in Switzerland, with 120,000 square feet of space, which now will include workshops, an event hall and an art garden.

The museum, with works from the 13th century to the present, is open 10 a.m.-6 p.m. Tues. & Fri.-Sun. and 10-8 Wed. & Thurs. The...