TARDIS were not, its weight would shatter the Earth's surface. In the tie-in novels, the interior of the TARDIS has been known to contain an entire city, encompass an entire parallel Earth, and even dwarf Gallifrey itself when turned inside out. A distinctive architectural feature of the TARDIS interior is the roundel. In the context of the TARDIS, a roundel is a circular decoration that adorns the walls of the rooms and corridors of the TARDIS, including the console room. Some roundels conceal TARDIS circuitry and devices, as seen in the serials "The Wheel in Space" (1968), "Logopolis", "Castrovalva" (1981), "Arc
Hexagonal window in the Northern European manor architecture of the 19th century. The concept became popular thanks to the Russian constructivist architect Konstantin Melnikov, whose own famous house had 124 hexagonal windows, which were the main source of light as ceiling lights were not provided in many rooms. Cellular windows are also a feature of the Scandinavian functionalism architecture of the 1940s–1960s and are a kind of synthesis of tradition and modernism in the architecture. Today, hexagonal windows may be associated with honeycomb houses, a concept proposed by architect Frank Lloyd Wright and explore an idea of organic architecture, which considers the