Designed to look right-side-up when reflected off the water below, this series wall murals features a series of nautical themes, including depictions of swimmers, rowers and swans. While the image above is accurate and not retouched, a modified photo (shown below) shows a more idealized version that does not really reflect reality.

New York-based Ray Bartkus made this mural for the Lithuanian city of Marijampole, set alongside the river Šešupe, which flows through the city’s center. The artist is known for other works that rely on mirrors and reflections as well.

A bit like a trompe l’oeil illusion, the viewer’s position changes the composition, and their is an ideal spot for the optical effect in relation to the various vertical planes onto which the murals were painted.

Walk right out onto the surface of the sea or follow a path that takes you into a tranquil space beneath the waves at the ‘Thematic Pavilion,’ a mostly-submerged nautical exhibition space envisioned for South Korea. Daniel Valle Architects intentionally give the structure an uneasy, delicate sense of equilibrium with the water, drawing parallels to the realities many coastal communities could face in the not-so-distant future as sea levels rise. A visitor’s experience changes depending on the state of the water, with paths appearing and disappearing.

The pavilion features subtle raised areas offering clear paths that remain above the surface even when water levels are high and, presumably, when rocked by the wake of a nearby ship. In much the same fashion as a submarine, a water tank keeps the ship-like structure submerged for exhibitions featuring water-based technologies, and raises it above the surface afterward so it can be used like an ordinary boat.

The exhibitions themselves range from the dazzlingly visual, like water shows, to the technical, like hydraulics and cooling systems. “The design aims to raise people’s attention on the ocean and coastal environmental crisis,” say the architects. “The design hopes to provoke the deepest impression to the visitors and prepare them for information and critique on all issues related to the oceans and coastlines. The beauty of scene after visiting the exhibition space and returning to the top plaza will contribute to develop an optimistic conclusion.”

While it seems like a lack of railings could lead some people to walk right off the edge, people in other areas of the world don’t seem to require the same kind of safety hand-holding as Americans, so maybe they’d be fine. The renderings look especially cool after dark, with illuminated water spouts shooting up into the sky. Though the proposal wasn’t chosen for the Expo 2012 in Yeosu, it’s an interesting idea that could provide inspiration to other structures blurring the lines between architecture and ship building.

Fathoms beyond traditional boat taxis, this modular water bus proposal for Stockholm bridges critical gaps within the current public transit system while also making boarding faster and transfers easier.

Developed by the KTH Royal Institute of Technology’s Department of Aeronautical and Vehicle Engineering, the Waterway 365 project fills in transportation voids, in part by taking the quickest and most direct routes possible across the water. Featuring wide back and side exits as well as, the solution is also bike-friendly for rapid boarding and disembarking. Adding versatility to the design, modular detachable sections make the approach more adaptable to different passenger volumes.

These water buses are also designed to run year-round, operating through winter freezes. To save materials and energy, the designers eschewed steel reinforced hulls in favor of lighter metal. The resulting vehicles are structured to handle some ice but are ultimately to be paired with ice-breaking plow boats as needed in extreme conditions. Initially envisioned for the country’s biggest city, the idea is to deploy these to bridge other urban waterways around Sweden as well.

From the design study: “A city comprised of islands, Stockholm seems a natural for the concept of water transit. Door-to-door travel time on at least one typical trip across town, the study shows, could potentially be reduced by one-third.” Connecting essential nodes, the idea is to reduce congestion as well as energy consumption in the long run.

Water-based public transit already exists in many places, including the canals of Venice, but generally utilizes either flat-style ferries or streamlined boats. These approaches represent two extremes that this new water bus design aims to navigate between – the ease of getting on and off, on the one hand, versus speed and handling of the vehicle on the other.

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.