Sign at south entrance to the Park, trees in fall colours, and the Mountain of the Sun and the Twin Brothers peaks, in the Zion National Park, Utah, United States of America, North America

Exterior of Luna Park entrance illuminated at twilight, St. Kilda, Melbourne, Victoria, Australia, Pacific

Twin towered stone gates of Torres de Quart, in old city walls, Valencia, Spain, Europe

ATLAS Film Studios, Ouarzazate, Morocco, North Africa, Africa

The main entrance, the National Gallery, Trafalgar Square, London, England, United Kingdom, Europe

Soldier stands infront of Chairman Mao's portrait at Gate of Heavenly Peace, Entrance to the Forbidden City, China

Wooden Memorial Archway of the Great Mosque in the Muslim area of Xian, China

Traditional door, Ile De Re, France.

Intricate carvings on the ornate golden gate entrance to Bhaktapur Palace in Nepal

The entrance to St. Giles' Cathedral, the High Kirk of Scotland, on the Royal Mile in Edinburgh, Scotland, United Kingdom, Europe

Entrance Hall, Gellert Baths, Budapest, Hungary, Europe

Art Deco detail of entrance to 30 Rockefeller Plaza, Rockefeller Center, Manhattan, New York City, New York, United States of America. North America

Water feature and architecture at night of luxury hotel, Saadiyat island, Abu Dhabi, United Arab Emirates, Middle East

Samokov Gate of Rila monastery, UNESCO World Heritage Site, Rila Mountains, Bulgaria, Europe

Penmon Point Lighthouse, built in 1838 at the northern entrance to the Menai Strait, and Puffin Island, with rough sea at high tide in winter, Penmon, Anglesey, Wales, United Kingdom, Europe

Traditional doorway with fanlight windows in Merrion Square famous for its Georgian architecture, Dublin, Ireland

Archway, engraved plaster, Storks' House, Dar Bellarj, built in 1930, Arts and Crafts Centre, Art foundation, Medina, Marrakech, Morocco, North Africa, Africa

Faded elegant old doorway in Youghal, County Cork, Southern Ireland

Traditional doorway with fanlight windows in Merrion Square famous for its Georgian architecture, Dublin, Ireland

Stone Memorial Gateway leading to the Phoenix Pavilion at the Great Mosque in the Muslim area of Xian, China

Nails and lion-head knocker on gate to Tower of Buddhist Incense at The Summer Palace, Beijing, China

Traditional door, Ile De Re, France.

Traditional door, Ile De Re, France.

Traditional door with metal design, Ile De Re, France.

Entrance path to Fushimi Inari Shrine in winter, Kyoto, Japan, Asia

Farmers Market entance in Pike Place Market, Belltown District, Seattle, Washington State, United States of America, North America

Exterior of KUMU Art museum of Estonia, Tallinn, Estonia, Europe

Tombs of Artaxerxes I (left), Xerxes (centre), and Darius the Great (right), Naqsh-i-Rustam, Iran, Middle East

Buck statues at the entrance to Mandraki Harbour, silhouetted at dawn, Rhodes, Dodecanese Islands, Greek Islands, Greece, Europe

Udai Vilas Oberoi resort Hotel, Udaipur Lake, Udaipur, Rajasthan state, India, Asia

One of the four carved stone toranas (gateways), Stupa One, Buddhist shrine dating from 3rd century BC, Sanchi, UNESCO World Heritage Site, Madhya Pradesh state, India, Asia

Tourists in paddle boat at entrance to Riverine Cave. longest navigable river traversed tunnel in the world, Subterranean River National Park, Sabang Town, Palawan, Philippines, Southeast Asia, Asia

Old prison tower seen across the harbour entrance at dusk, La Rochelle, Charente-Maritime, France, Europe

The Royal Reception Rooms, Christiansborg Palace, Copenhagen, Denmark, Scandinavia, Europe

Apostles on the main entrance to the Dominican Abbey of Santa Maria de Vitoria, UNESCO World Heritage Site, Batalha, Estremadura, Portugal, Europe

Buddhist monks at Ta Prohm Temple (Rajavihara), Angkor, UNESCO World Heritage Site, Siem Reap Province, Cambodia, Indochina, Southeast Asia, Asia

Art nouveau entrance to the Metro Station at Cafe Kleber, Trocadero, Paris, Ile de France, France, Europe

Moti Mahal, doors to the Zenana Deodi harem at Mehrangarh Fort at Jodhpur in Rajasthan, Northern India

Hall of Benevolence and Longevity in The Summer Palace, Beijing, China

The neo-gothic Hungarian Parliament building front entrance, designed by Imre Steindl, with an equestrian statue of Ferenc Rakoczi II in foreground, Budapest, Hungary, Europe

Cavern Club, Mathew Street, Liverpool, Merseyside, England, United Kingdom, Europe

Ice Hotel, Kiruna, Lapland, Arctic Circle, Sweden, Scandinavia, Europe

Jama Masjid (Jama Mosque), Old Delhi, Delhi, India, Asia

Ornate entrance interior of Gellert Thermal Baths, Budapest, Hungary, Europe

Sufi men standing in the Maruf al-Karkhi Sufi Mosque, Baghdad, Iraq, Middle East

Painted door, Rua de Santa Maria, Funchal, Madeira, Portugal, Atlantic, Europe

Bab Sbaa entrance gateway to Medina, Essaouira, Morocco, North Africa, Africa

Couple outside Love Hotel (fashion hotel), Kyoto city, Honshu island, Japan, Asia

Main entrance, Bobo-Dioulasso market, Burkina Faso, West Africa, Africa

The 1930's Art Deco style National Tobacco Company building in Napier, North Island, New Zealand, Pacific

La Foce mansion open to the public near Montepulciano in Val D'Orcia area of Tuscany, Italy

Elegant Georgian Doorway of period house in The Cotswolds at Blockley in Gloucestershire, UK

Chateau de Chaintres in Saumur Champigny region of the Loire Valley, France

Jaswant Thada, the Maharaja of Jodhpur Memorial, built 1906, at Jodhpur in Rajasthan, Northern India

Entrance foyer, British Museum, London, England, United Kingdom, Europe

Art Deco detail of entrance to 30 Rockefeller Plaza, Rockefeller Center, Manhattan, New York City, New York, United States of America. North America

Tiles (azulejos) in entrance hall, Estacao de Sao Bento train station, Porto (Oporto), Portugal, Europe

Entrance to tube station, advertisement, Piccadilly Circus, London, England, United Kingdom, Europe

Rex Hotel reception entrance, Ho Chi Minh City (Saigon), Vietnam, Indochina, Southeast Asia, Asia

Tiananmen Square, the Gate of Heavenly Peace, entrance to the Forbidden City, Beijing, China, Asia

Grand entrance hall to the fort at the base of the hill on which the fort sits, Kuchaman Fort, Rajasthan state, India, Asia

Stained glass window in The Cathedral of Notre Dame, Our Lady, at Strasbourg, Alsace, France

Chateau Yon Figeac wine chai cave near St Emilion, Bordeaux, France

Dusit Maha Prasat Hall, Bangkok, Thailand

Basilica and Sanctuary of Santo Stefano, Bologna, Emilia-Romagna, Italy, Europe

Fresco paintings on door in Rua de Santa Maria, famous street in the old town of Funchal, Madeira island, Portugal, Atlantic, Europe

The Siq, narrow entrance between rock cliffs, to the site of Petra, UNESCO World Heritage Site, Jordan, Middle East

Bloomingdale's department store, Lexington Avenue, Upper East Side, Manhattan, New York City, New York, United States of America, North America

Looking down on entrance of Biet Giorgis, rock cut Christian church, Lalibela, UNESCO World Heritage Site, Ethiopia, Africa

Stone wall, fields and Lingmoor Fell, Little Langdale, Lake District, Cumbria, England, United Kingdom, Europe

Second entrance gate to Brihadisvara Temple, dating from early Chola period of King Rajendra I between 985 and 1012 AD, UNESCO World Heritage Site, Thanjavur (Tanjore), Tamil Nadu state, India, Asia

Entrance to International Airport, San Francisco, California, United States of America, North America

Penmon Point Lighthouse, built in 1838 at the northern entrance to the Menai Strait, and Puffin Island, with rough sea at high tide in winter, Penmon, Anglesey, Wales, United Kingdom, Europe

Red Fort, built by Akbar in 1565, completed by Aurangzeb, UNESCO World Heritage Site, Agra, Uttar Pradesh state, India, Asia

Oak tree alley and planation house in the Oak Alley plantation, Louisiana, United States of America, North America

The ornate entrance gate to Santa Lucia Hill facing the major thoroughfare of Avenida Liberatador Bernardo O'Higgins in the heart of the capital, Santiago, Chile, South America

Chateau de Montgeoffroy, 18th Century manor house, by architect Jean-Benoit-Vincent Barre, near Angers, France

Elegant Georgian Doorway of period house in The Cotswolds at Blockley in Gloucestershire, UK

Traditional doorway with fanlight windows in Merrion Square famous for its Georgian architecture, Dublin, Ireland

Exterior of a Cotswolds house called Glenthorne House, Burford, United Kingdom

The White House expecting VIP guest, Washington DC, United States of America

Cueva de Los Verdes, cave tourist attraction in lava pipe tunnel, Lanzarote, Canary Islands, Spain, Atlantic, Europe

Entrance to the Essaouira's old Medina, formerly Mogador, UNESCO World Heritage Site, Morocco, North Africa, Africa

Kollam or rangoli in front of the house, Srirangam, Tamil Nadu, India, Asia

The large pyramid in the main courtyard and the main entrance to the Louvre Museum, Paris, France, Europe

The Norbulingka Tibetan Institute of Tibetan Arts and Culture, Dharamsala, Himachal Pradesh, India, Asia

Art exhibition Atlas by Jan Hendrix, artwork in central courtyard of palace of Casa de Montejo, Merida, Yucatan State, Mexico, North America

Exterior of Galle Railway station, Galle, Sri Lanka, Asia

View from cave entrance of the beach and coast, Ao Phra Nang, Province of Krabi, Thailand, Southeast Asia, Asia

Entrance to the City Fort built by the Moghuls between 1524 and 1764, Lahore City, Punjab, Pakistan, Asia

Early 17th century Cathedral, Cuzco, UNESCO World Heritage Site, Peru, South America

Casa de Diego Velazquez, oldest house in Cuba, Santiago de Cuba, Cuba, West Indies, Central America

Chinese Gate, China town at night, Yokohama, Japan, Asia

Entrance to tube station, advertisement, Piccadilly Circus, London, England, United Kingdom, Europe

Traditional house with green window shutters and covered in Virginia Creeper, in hill town of Monticcheillo, Val D'Orcia area of Tuscany, Italy

Traditional doorway with fanlight windows in Merrion Square famous for its Georgian architecture, Dublin, Ireland

Soldier and tourists at the entrance to the Forbidden City, Beijing, China

Traditional door, Ile De Re, France.

Front door of town house in Chipping Campden, Gloucestershire, United Kingdom

View of Sheikh Zayed Grand Mosque, Abu Dhabi, United Arab Emirates, Middle East