More ancient history
Summer Solstice 2018 Sunset at Drombeg Stone Circle. The Fulacht Fia (cooking pit) in the foreground
More ancient roman architecture
The Puente Nuevo that spans the 120 meter deep chasm and Guadalevín River and divides the city of Ronda in Andalucia.
Metropolitan Area Outer Underground Discharge Channel (Saitama, tours available). This giant chamber collects floodwaters from various smaller rivers and redirects it to bigger rivers.
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