On the Rua do Carmo, in central Porto, Portugal, two churches stand side by side, so close that they appear to be one building. They are the 17th-century Igreja das Carmelitas nunnery and 19th-century Igrejo de Carmo monastery. In fact, the two churches are separated by one of the world’s narrowest houses, no more than one meter wide and yet three stories tall, known locally as the Hidden House.

Actually occupied until the 1980s, the Hidden House is now a museum that can be...

On July 19 Canada announced that, starting Aug. 9, 2021, fully vaccinated travelers from the US will be allowed to enter the country by land or air. Vaccinated travelers from other countries will be allowed entry starting Sept. 7. Proof of a negative result on a PCR COVID-19 test, taken within 48 hours of arrival, will be required.

US leisure travelers have been unable to enter Canada by any means since March 2020, by mutual agreement between the countries.

In order to...

Carnival Cruise Line and Norwegian Cruise Line have multiple cruises scheduled to leave from US ports in September and October. However, each one must still be approved by the CDC before being allowed to depart, with those decisions to be made closer to the embarkation dates.

The CDC has issued a vaccine requirement on cruises leaving from US ports. However, Florida’s governor, Ron DeSantis, signed an order saying businesses in that state cannot require customers to be vaccinated....