A Tsubakai, a stone wash basin for the tea room, Ryoan-ji Temple in NW Kyoto, Honshu, JapanThe Zen inscription reads 'I learn only to be contented'

Buddhist monks worship with round gongs inside a prayer room at a monastery, Bhutan, Asia

Buddhist monks worship with round gongs inside a prayer room at a monastery, Bhutan, Asia

Raised mud reliefs inlaid with mirror on the walls of dining area in modern home in traditional tribal Rabari round mud hut, Bunga style, near Ahmedabad, Gujarat state, India, Asia

Raised mud reliefs inlaid with mirror on the walls of bedroom in modern home in traditional tribal Rabari round mud hut, Bunga style, near Ahmedabad, Gujarat state, India, Asia

Raised mud reliefs inlaid with mirror on the walls in bedroom of modern home in traditional tribal Rabari round mud hut, Bunga style, near Ahmedabad, Gujarat state, India, Asia

Birmingham Museum & Art Gallery, Round Room, Chamberlain Square, Birmingham

Charnel house at the historic under church, Benedictine convent Altenburg near Horn, Lower Austria

Round white conference table with empty, blue leather chairs and passing secretary

Human Rights Room, interior, Parliament Palace, Bucharest, Romania, Europe

Throne room, griffin frescoes, throne, porphyry basin, black round columns, wooden door, Palace of Knossos, Heraklion, Central Crete, Island of Crete, Greece, Europe

Antechamber of the throne room, black round columns, porphyry basin, wooden door, Palace of Knossos, Heraklion, Central Crete, Island of Crete, Greece, Europe

Paul Loebe Building, Bundestag administration and members' offices, Berlin-Mitte, Berlin, Germany Europe

Port hole windows in round lighthouse living room, Newport News, Virginia, USA