Urban photographer Roman Robroek spent five years scouring the continent for the grandest examples of forgotten architectural beauty. Here: Watch your step on this Polish spiral staircase. (Photo by Roman Robroek/South West News Service)

Saudi youths demonstrate a stunt known as “sidewall skiing” (driving on two wheels) in the northern city of Tabuk, in Saudi Arabia December 3, 2014. (Photo by Mohamed Al Hwaity/Reuters)

Jessica Shears attends the UK Premiere of “Daddy's Home 2” at Vue West End on November 16, 2017 in London, England. (Photo by Karwai Tang/WireImage)

A Pomeranian dog sits in a rolling pet carrier in Hong Kong, China on September 4, 2019. (Photo by Kai Pfaffenbach/Reuters)

Members of the Uniao da Ilha do Governador Samba School perform during the first day of the Special Group Samba Schools parade of Carnival at the Sambadrome in Rio de Janeiro, Brazil, 07 February 2016. (Photo by Luiz Eduardo Perez/EPA)

Actress Ruby Rose, left, recipient of the Stephen F. Kolzak Award, hands her jacket to presenter Taylor Swift during the 27th Annual GLAAD Media Awards at the Beverly Hilton on Saturday, April 2, 2016, in Beverly Hills, Calif. (Photo by Chris Pizzello/Invision/AP Photo)

Star of Cabaret, English actor Eddie Redmayne attends The Olivier Awards 2022 with MasterCard at the Royal Albert Hall on April 10, 2022 in London, England. (Photo by David Levene/The Guardian)

Ukraine's Viktoriia Onopriienko competes in the individual all-around qualification round during the Rhythmic Gymnastics World Championships at the West Japan General Exhibition Center in Kitakyushu, Fukuoka prefecture on October 27, 2021. (Photo by Charly Triballeau/AFP Photo)