st Frug 5 Down Frug Street lies the distinctive and aptly named Thermometer House, built by Yehuda Liolka. The peculiar slatted openings along the inside stairwell were an embellishment designed not for the aesthetic interest, but, of course, for functionality, allowing light to stream onto the staircase during daytime hours so as to preserve electricity by making the best use of natural light. The architect has also paid careful consideration to climate sensitivities and provided raised banisters along the balcony protrusions, serving both as a banister and as a much-needed shade for this social space, used throughout the day by residents.