This week’s Rough Guides Twitter chat – #RGchat – was all about awesome architecture. We asked our followers to share their best photos of architecture from around the world, and they didn't disappoint.

From Ethiopia’s rock-hewn monolithic churches to the extraordinary Machu Picchu to the sleek, and urban design of the Helix Brige in Singapore to Kuala Lumpur's imposing Petronas Towers, we've rounded up our favourite shots.