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St. Michael's Fortress in Sibenik, Croatia. Adriatic Sea in the background. View from the Barone Fortress.
The Great Wall of China in the older, Jinshanlin, area.
Castle ruins in Rabsztyn in Poland in rainy and foggy weather. The facility near Olkusz was partially rebuilt and made available on the Eagle's Nests trail on the Krakow-Czestochowa Upland.
Ancient city wall in Linhai City, Zhejiang Province, China
an old fortress.
The Badaling Great Wall
Sighnaghi fortress in Signagi, a georgian town in Georgia's easternmost region of Kakheti. Important center of Georgia's tourist industry.Sighnaghi is known as a Love
The fortifications of the town of Rhodes
Great Wall of China in the autumn on a background of mountains
Skyscraper low angle vision
Castle ruins in Rabsztyn in Poland in rainy and foggy weather. The facility near Olkusz was partially rebuilt and made available on the Eagle's Nests trail on the Krakow-Czestochowa Upland.
Balkh, Balkh province, Afghanistan: Ayaran tower (Borj-e Ayyarann) on the Greek-Kushan city wall, topped by the Timurid wall - south segment of the massive earthen city walls - Bactra / Zariaspa, an ancient city, with a 3000-year long history, the home of Zoroaster, taken by  Alexander the Great about 330 BC, capital of Greco-Bactria and later one of the largest cities of Khorasan, razed by Ghengis Khan in 1220AD.
Saint-Tropez, France August 9 2017: Citadel of Saint-Tropez, which now serves as a maritime museum.
Skopje, Macedonia
Linhares da Beira Portugal - 10 06 2023: Panoramic view at the Linhares da Beira Castle, a medieval catle located on Linhares da Beira village downtown, Serra da Estrela mountains, Viseu, Portugal
Lourdes, France - July 18, 2022: Lourdes City in Summer - Château fort de Lourdes Fort Drone View. Lourdes is a  World famous Pilgrim destination., a small market town lying in the foothills of the Pyrenees, famous for the Maria apparitions of Our Lady of Lourdes. Château fort de Lourdes, Lourdes, Lourdes,  Hautes-Pyrenees, France, Europe
Suwon, South Korea - March 3, 2012: Hwaseong Fortress is the wall surrounding the center of Suwon, Gyeonggi-do. The wall has a great variety of military facilities that’s hard to find anywhere else.
Seoul, Korea - October 2nd 2023, Its the City Hall Square in Downtown Seoul Korea during Korean Thanksgiving Holidays. 서울 세종대로 시청앞 광장
Dubrovnik, Croatia - June 27, 2023: Minceta, fortified tower on City Walls surrounding the mediaval old city by Adriatic Sea
Horizontal landscape photo of the ancient Citadel known as the Tower of David, near the Jaffa gate entrance to the Old City, Jerusalem
Les Baux-de-Provence, France - March 4, 2023: Tower in Les Baux de Provence on a sunny day in springtime, blue sky
Jinshanling Great Wall is one of the Great Wall, the most representative of the lot, located at the junction of Hebei Province the Luanping and Beijing Miyun County.
The Black Fort in Gyumri, Armenia
Old Muscat, Oman: Aljalali Fort or Eastern Fort, originally 'Forte de São João' (Fort St. John), is a harbor fort in Old Muscat, it was erected by the Portuguese Empire under King Philip I, between 1586 and 1588, to protect the port after Muscat had been sacked twice by Ottoman forces. In 1650, it fell to Omani forces. In the Omani civil wars between 1718 and 1747, it was captured twice by the Persians invited to support one of the rival imams. It then underwent extensive reconstruction. On several occasions, it served as a refuge or prison for members of the royal family. For much of the 20th century it was used as Oman's main prison.
Beijing, China – May 24, 2012: A view of the Great Wall in Beijing, China. The Visitors are both locals and foreigners. They walk up and down the steep stairs.
The Castello Brown, a historic house museum located high above the harbour of Portofino, Genoa province. Its site has been used for military defence since Roman times.
Jiayu Pass at the west end of the Great Wall of China in Gansu Province China
Medieval walls of Visby dating from around year 1270 - UNESCO World Heritage
Ussel fraction of Chatillon, Valle d'Aosta, Italy 11 February 2018. Large format photo of the castle facade, entrance side.
Part of medieval 16th century fortification Fort Carre, Antibes, France. Sunny day, clear blue sky.
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