Ornate, chandelier-encrusted railway stations may seem like a Gilded Age wonder. But many of these old buildings are earning second chances, as elderly railway stations across the United States continue to be repurposed. Some have even become unique tourist attractions in their own right.

Train stations were once the centrepieces of many US cities. After decades of neglect, many places are now reviving them in new, creative ways.

Examining the past, present and future of concrete structures, the exhibition also invites speculative designs by leading architecture firms, including Brooks+Scarpa, Diller Scofidio + Renfro, Gensler, BLDUS along with students from the School of Architecture at the University of Nevada, Las Vegas (UNLV) who envision future possibilities for the five buildings presented.

Some cities and the architecture there can make your jaw drop because of how impressive they look. But some others… Well, let's just say your jaw might drop because of a reaction far less positive than that. In the latter, you might be met with dirty streets, overcrowded neighborhoods, and buildings that resemble the set of an apocalypse-based movie more than it does someone’s home.

Las Vegas is known as Sin City, but it could just as easily be called Solar City thanks to the millions it’s investing in sustainability initiatives. A recent BBC report highlighted the city’s push to go green, including everything from water conservation and waste management efforts to solar power projects.

Las Vegas is notorious for bright lights, excess and hedonism. But America's playground – or to use its better-known nickname, Sin City – is going green. From water conservation and waste management to solar power, the city has invested millions in pushing sustainability initiatives.