Even though Georgians are not the biggest fans of their Soviet heritage, this great example of Tbilisi 70s brutalism must not be missed. Built on steep slopes in Nutsubidze street, it is one of the quirkiest constructions you will ever see. The three apartment blocks are connected by a bridge that goes through them. From the sky bridge, you can also see a nice view of the residential parts of Tbilisi. Once you are up and walk through the bridge, turn right and take a walk down the winding streets and admire a Caucasian architectural know-how: semi-legal additions to residential blocks of all shapes, sizes and materials.

The National Botanical Garden of Georgia in Tbilisi covers an area of 161 hectares in the foothills behind Narikala Fortress and contains a collection of over 4,500 different plant groups. An arched bridge built over a waterfall provides a magnificent view on the Tsavkisistskali river and the garden.

Reservations are required for guided tours, but you can stop by the visitors center any day to explore its educational exhibits, including some chronicling research projects conducted at the Arizona observatory. The FLWO is conducted under the auspices of the Harvard-Smithsonian Center for Astrophysics.

Learn about the copper industry at the ASARCO Mineral Discovery Center. It features numerous exhibits, a Discovery Theater, a garden and a gift shop with jewelry by local artisans. Tours of the Mission Mine are also available.