Bayn Lite is a free theme for WordPress created by GretaThemes.
A WordPress theme made for architecture and design businesses. Bayn Lite is perfect for showing off your designs and make more customers come to you. Build on the latest technology, Bayn is totally responsive and run elegantly on any kind of devices.
(Description "Bayn Lite" Theme from wordpress.org)
You can download Bayn Lite for free via the provided download link and include it into your themes folder of your WordPress installation. Also you can directly search for it in the WordPress admin interface in the themes section and install and activate it from there.
More information, screenshots and reviews of Bayn Lite Theme can be found here.