Overhead tram line overlooking canal boats at Victoria Quays, formerly the Canal Basin, Castle Gate Quarter, Sheffield, Yorkshire, England

Wild planting, Grey to Green initiative, with Royal Exchange Buildings and Castle house behind, Castle Gate Quarter, Sheffield, Yorkshire, England

Caerphilly Castle, Caerphilly, Gwent, Wales, United Kingdom, Europe

View of Gyokusenin Maru Garden in the grounds of Kanazawa Castle, Kanazawa City, Ishikawa Prefecture, Honshu, Japan

View of Kanazawa from Hommaru-enchi Park at sunset, Kanazawa Castle, Kanazawa City, Ishikawa Prefecture, Honshu, Japan

View of Kanazawa from Hommaru-enchi Park at sunset, Kanazawa Castle, Kanazawa City, Ishikawa Prefecture, Honshu, Japan

Vineyards surrounding the Aigle Castle, Canton of Vaud, Switzerland

Aerial view of Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

The Great Ball Court in the Mayan Ruins of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

Aerial view of Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

El Castillo, The Pyramid of Kukulkán, is the Most Popular Building in the UNESCO Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico. Asian tour leder dressed in a maya style.

Stony stairs of tomb of the High Priest pyramid at Chichen Itza Archaeological Site in Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

The Church and Nunnery at Chichen Itza Archaeological Site in Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

El Castillo, The Pyramid of Kukulkán, is the Most Popular Building in the UNESCO Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

El Castillo, The Pyramid of Kukulkán, is the Most Popular Building in the UNESCO Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

El Castillo, The Pyramid of Kukulkán, is the Most Popular Building in the UNESCO Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

Serpent head sculpture in Mayan Ruin of Chichen Itza Archaeological Site in Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

Cano's Castle, built by Donald "Cano" Espinoza, a Native American and Vietnam veteran who built the Christian-themed structure from beer cans, hub caps, and other scrap materials, in thanks for his life being spared in Vietnam, Antonito, Colorado, USA

Gwalior Fort, Gwalior, Madhya Pradesh, India, Southasia, Asia

Beach castle built in sand dunes with driftwood and mmaterial washed up from the Sea between Nebel and Norddorf, Amrum Island, Schleswig-Holstein, Germany, Europe

Garden of castle of the duke Bettoni on Lake of Garda Italy

Inverary castle Scotland

tram and castle in the background Budapest Hungary