The Prague ring road crossing at Malovanka in Břevnov, that is an intersection of tunnels and streets, as a location for a luxury hotel? It does not make sense at first sight. Well, good traffic accessibility is a pro. Prague Castle behind the corner and the Střešovice residential neighbourhood behind the back. Well, there already is one not too small (pyramidal) hotel in this location, after all. Therefore, the question remains how the negative loading by traffic should be dealt with. An idea of a vertical glasshouse turned out to be the key to the concept. It had to separate the hairbrush containing guest rooms as a visual and acoustic, yet not a lighting screen. However, the glasshouse is in our case not encrusted from the inside, but from the outside, too. The structure of glazing frames evoking tree branches and trunks should be grown over in time and, through the climbing green, turn the seemingly rigid glass layer in a fluffy green fur coat here and there. Contrasting with the irregular pattern of green branches, the expression of the cluster of guestrooms is abruptly tight. Each unit spells a room; each room spells a circular window.