A local artist poses with one of his pieces, which he constructs by balancing rocks on top of each other by hand, in Lisbon, Portugal on April 27, 2018.
A Carabinieri soldier stands guard near the Trevi Fountain in Rome, Italy on April 7, 2018.
A guard paces the forecourt of Buckingham Palace during a Changing the Guard ceremony in London, England on March 18, 2018.
Pedestrians make their way through a crowded street in Rome, Italy on April 7, 2017.
Hannah Braid, 19 (left) and Max Abrams, 22 (right), enjoy their ride in a tuk-tuk, or auto rickshaw, down a mountain in Sintra, Portugal on April 30, 2018.
Dusk sets in on a snowy evening at the London Bridge in London, England on March 17, 2018.
A child sleeps during a Changing the Guard ceremony at Buckingham Palace in London, England on March 18, 2018.
An elderly man stares out at the city landscape of Lisbon, Portugal on April 27, 2018.
A lone man fishes at the Boca do Inferno chasm in Cascais, Portugal on April 29, 2018.
A lone man fishes at the Boca do Inferno chasm in Cascais, Portugal on April 29, 2018.