Dezeen promotion: custom-designed windows, made by Reynaers Aluminium, wrap the facades of this pair of twisting towers designed by Alexander Mezhevidze, which are the tallest buildings in Tbilisi.
Located in the capital of Georgia's Vake district, the two 37-storey Axis Towers are identical in form, with one clad in white stone and the other with black glass.
The white tower contains apartments, while a hotel, offices and fitness facilities are in the glazed tower, which is topped by a bar.

The towers' spiralling forms and expansive glass facades, made by manufacturer Reynaers Aluminium, have been designed to resist seismic activity and high winds that are experienced in the Georgian capital.
The complex's developer Axis collaborated with the glazing manufacture to create a tailor-made window system that would work with the building's structure and these conditions. Reynaers Aluminium developed a bespoke arrangement of double-glazed windows and aluminium profiles to meet the structural requirements, while also giving the buildings plenty of light, reducing noise and creating a suitable luxury aesthetic.

"The Reynaers Aluminium systems that were used in the Axis Towers project were chosen by the customer because they met the reliability requirements, ergonomics and the overall appearance of the building," said Reynaers Aluminium's Tengiz Kvantaliani.
"This is the largest project for Reynaers Aluminium in Georgia today, and its successful implementatio...