![Morpheus Hotel by Zaha Hadid Architects in Macau, China](https://www.popsci.com/wp-content/uploads/2018/11/20/ISTWS4VKSZENLMBXWMJDSQKMHY.jpg?w=1000)
Built atop an abandoned rectangular foundation in Macau, China, the 42-floor Morpheus hotel is a study in openness. Between the building's two towers, visitors enter a 131-foot-tall atrium. Their view upward and sideways is unencumbered by support columns thanks to a freeform steel mesh exoskeleton—the world's first in a high-rise. The complex exterior helps hold the building up and completely supports the atrium's façade. All the better to admire the artful, irregular holes punched between the towers. Ivan Dupont