Among the winners and honorable mentions from the 2018 Travel Photographer of the Year Contest are an expected array of wilderness scenes and animal portraits, but also a surprising number of unnatural environments.

Over 12,000 submissions for this year’s competition included mesmerizing images of art installations, aerial views of urban architecture, suspenseful shots of elegant bridges and window-reflected construction scenes.

Even some photographs of purely natural places seem strikingly architectural, like this photo of rocks carefully perched on eroding earthen columns.

Above: People’s Choice, “The Girl Who Leapt Through Time” by Daniel Cheung; Honorable Mention, “Alone in the Crowds” by Gary Cummins; Third Place Winner, “Reflection” by Gaanesh Prasad; Nature:Third Place Winner, “Mars” by Marco Grassi.

Even rather mundane settings can make for wonderful photos. Above and below: People’s Choice, “Traveling to Heaven” by Trikansh Sharma; Cities: First Place Winner, “Another Rainy Day in Nagasaki” by Hiro Kurashina.  (via Colossal).

Using the existing vessel-shaped space of a six-decades-old dry dock, the Danish National Maritime Museum in Helsingor, Denmark takes visitors on a unique subterranean tour of the areas used to build, maintain and repair ships.

Historically, the zone would be drained to bring in or assemble vessels then flooded to send them back out into open waters. Today, thanks to BIG architects (images by Rasmus Hjortshøj and Luca Santiago Mora), people can follow a staircase directly down and enter the area at the lower levels then cross through it via interior sloping skyways.

Alternatively, a grand entry path begins above via the bridge system that zigs and zags along the length of the museum to a main entry just below ground level. This route offers a gentle slope and stellar views of everything happening below and on all sides. Passers by can also enjoy a good look down when traversing a smaller connecting bridge that simply spans from one side to the other.

The main museum exhibition, auditorium, classroom, office and cafe areas are arrayed around the outdoor void on the levels below. Their borders are in turn defined by an off-axis rectangle the emphasizes their contrast with the curved ship shape of the center space and connect to other nearby attractions, monuments and landmarks.