Built around 3200 B.C., Newgrange's Megalithic Passage Tomb covers an area of more than one acre and is estimated to have taken a crew of 300 people 20 years to complete. The tomb was once thought to be the home of Oenghus, the god of love, in Irish mythology, and was rediscovered in 1699. As a designated World Heritage Site, the tomb is quite popular among tourists, especially during the Winter Solstice, when the chamber is illuminated with the rising sun.
During a visit to Newgrange, reader winkpc20 was "reminded ... of the Mayan ruins in Central America."
Reader ben657681 thinks the tomb is a "must-see," and that "the passage tomb is truly awe inspiring when you consider that it was built before the pyramids."
(Photo: iStockphoto/Philippa Banks)