Scenic train journeys and photogrammetry techniques

Travelers seeking unique experiences can explore several notable scenic train routes globally. In Switzerland, the Glacier Express travels between Zermatt and St. Moritz, crossing 291 bridges and 91 tunnels. The Bernina Express also offers significant views, with its lines recognized as a UNESCO World Heritage Site.

Other notable routes include Norway’s Flåm Railway and Bergen Line, which features steep drops and traverses the snow-covered Hardangervidda plateau. In North America, the Rocky Mountaineer and California Zephyr provide daylight-only journeys across the Rockies and Sierra Nevada mountains, spanning 2,400 miles from Chicago to the Bay Area. Australia also offers long-distance routes such as The Ghan and Indian Pacific.

Separately, photogrammetry can be applied to images taken from commercial airplane windows. Using tools like QGIS, photos can be georeferenced and transformed onto maps using projective functions. However, simple projective transformations can cause misalignment in areas with varying elevations, as the method assumes a flat surface.