Saguaro cactuses are Arizona's towering icons. However, only one holds the record for being the tallest ever measured. Here's what to know about it.

The Meiders Alpine Mountain Coaster in Meiders, Austria, is the steepest and second longest at just over two-and-a-half miles ...

The highest bridges in the United States are as spectacular as the tallest buildings and skyscrapers across the country.

Rail travel in Thailand is not only affordable and practical—it’s an experience in itself. With colonial-era stations, panoramic countryside views, and local life on full display, the journey is often ...