A bunker at aformer Swiss artillery fortress called Heldsberg stands near the town of St. Margareten, Switzerland March 22, 2015. Heldsberg fortress, located on the Swiss-Austrian border near the River Rhine and Lake Constance was built from 1938 to 1940 and remained in military use until 1992. Since 1993 it is open to the public as Fortress Museum Heldsberg. (Photo by Arnd Wiegmann/Reuters)

A Buddhist monk lights a candle at Wat Phra Dhammakaya during a ceremony on Makha Bucha Day in Pathum Thani province, north of Bangkok February 22, 2016. Makha Bucha Day honours Buddha and his teachings, and falls on the full moon day of the third lunar month. (Photo by Jorge Silva/Reuters)

A policewoman reacts as she falls off from a motorcycle while taking part in a rehearsal for Independence Day celebrations, in Ahmedabad, India August 4, 2017. (Photo by Amit Dave/Reuters)

Waves triggered by Typhoon Hato are seen in Hong Kong, China on August 23, 2017. A powerful typhoon barreled into Hong Kong on Wednesday, forcing offices and schools to close and leaving flooded streets, shattered windows and hundreds of canceled flights in its wake. Typhoon Hato came within 60 kilometers (37 miles) of Hong Kong, close enough to be considered a direct hit under Hong Kong's storm warning system. It was headed toward the western side of mainland China's Pearl River Delta. (Photo by Tyrone Siu/Reuters)

Mercury and Maia, fueled and overhauled, are waiting in the Tay at Dundee, for favorable weather to start the flight to the Cape, a distance of 6,370 miles. The composite machine moored in the Tay River, at Dundee, on September 23, 1938. (Photo by AP Photo)

Riot police help an injured anti-government protester after scuffles broke out with women police officers on a road leading to the parliament building, during a protest in Beirut on November 19, 2019. Thousands of protesters rallying against the Lebanese political elite blocked roads in central Beirut on Tuesday, preventing lawmakers from reaching the parliament and forcing the postponement of a legislative session. (Photo by Bilal Hussein/AP Photo)

A couple kisses in a central Barcelona street during the first night without the state of alarm, on 9 May, 2021 in Barcelona, Catalonia, Spain. The state of alarm that the Government decreed for the second time six months ago ended at 00.00 hours this Sunday, May 9. In Catalonia this has led to the fall of the curfew and the perimeter confinement of the Community. (Photo By Lorena Sopena via Getty Images)

A man walks at the empty Karon beach on Phuket Island, Thailand on April 1, 2021. Picture taken with a drone. (Photo by Jorge Silva/Reuters)