Grade II listed Botanical Gardens, designed 1830s by Robert Marnock, opened 1936, Clarkehouse Road, Ecclesall Road, Sheffield, Yorkshire, England

Pit House, Step House Ruin, dates from 626AD to 1226AD, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America

Troglodyte pit home, Berber underground dwellings, Matmata, Tunisia, North Africa, Africa

Troglodyte pit home, Berber underground dwellings, Matmata, Tunisia, North Africa, Africa

Sunken irori fire pit inside the Kyu Uchiyamake historic Samurai house in Echizen-Ono, Fukui, Japan, Asia

Morocco, Historical City Of Fes, Elevated View Over The Tanners Souk (Market) Where Skins Are Treated

Dogs at fire pit on Malekula, Vanuatu, South Pacific, Oceania

A pit house, part of an excavated ancient Anasazi village at the Anasazi State Park Museum, the site dates to the 12th century, Boulder, Utah, USA

Mansion, La Tene culture, Celtic village Gabreta, Lichtenau near Ringelai, Bavarian Forest, Lower Bavaria, Bavaria, Germany, Europe

From Pit to Port, bronze statue by John Clinch, Jon Buck, Roath Basin, Waterfront Park, Cardiff Bay, Cardiff, Caerdydd, South Glamorgan, Wales, United Kingdom, Europe

Open fireplace in a Hessian farmhouse, Hessenpark outdoor museum near Neu-Anspach, Hochtaunuskreis district, Hesse, Germany, Europe

Historical brine handling system in the Salinenpark park, Bad Rappenau, Neckar, Baden-Wuerttemberg, Germany, Europe

Historical brine handling system in the Salinenpark park, Bad Rappenau, Neckar, Baden-Wuerttemberg, Germany, Europe

Stone and turf structure with wooden doorway at the recreated longhouse in Greenland's Brattahlid, Eriksfjord area, part of a reconstruction of Erik the Red's settlement, Kujataa World Heritage Site, Qassiarsuk, Southern Greenland, Greenland

Fire pit in front of house, Colorado, United States

Fire pit in front of house, Colorado, United States

Fire pit in front of house, Colorado, United States