Background image credits

Frettie, CC BY-SA 3.0, via Wikimedia Commons
Ken Lund from Reno, Nevada, USA, CC BY-SA 2.0, via Wikimedia Commons
Kenneth C. Zirkel, CC BY-SA 4.0, via Wikimedia Commons
Ken Lund from Reno, Nevada, USA, CC BY-SA 2.0, via Wikimedia Commons
Myrabella, CC BY-SA 3.0, via Wikimedia Commons
Santeri Viinamäki, CC BY-SA 4.0, via Wikimedia Commons
Kharkivian (Serhii Petrov), CC BY-SA 4.0, via Wikimedia Commons.
s.yume from Calgary, Canada, CC BY 2.0, via Wikimedia Commons
Ken Lund, CC BY-SA 2.0, via Flickr.
Ken Lund, CC BY-SA 2.0, via Flickr.
Ken Lund, CC BY-SA 2.0, via Flickr.
Leap Kye, CC BY-ND 2.0, via Flickr.
Like_The_Grand_Canyon, CC BY-NC 4.0, via Flickr.
Zürich Tourism, CC BY-SA 4.0, via Open Data Portal of Zürich Tourism.
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