Short answers, pulled from the story.
Sagnlandet Lejre, also known as Lejre Land of Legends, is an open-air archaeology museum on the island of Zealand in Denmark. It is situated 4 km northwest of the town of Lejre and 1 km west of Gammel Lejre, a major political centre in Iron Age Scandinavia.
Sagnlandet Lejre was founded in 1964 by ethnologist Hans-Ole Hansen. His aim was to generate new knowledge of the past through practical experiments rather than observation alone.
On the 1st of March 2009, the institution changed its name from the Centre for Historical-Archaeological Research and Communication (Historisk-arkæologisk Forsøgscenter) to Sagnlandet Lejre.
The site includes a Stone Age campsite from around 5000 BC, an Iron Age village and sacrificial bog from the period 200 BC to 200 AD, a Viking marketplace from around 900 AD, and an 18th-century farmstead, along with various grave monuments and working artisan workshops.
Around 55,000 tourists and school children visit Sagnlandet Lejre each year. Each summer, some families spend a full week living in the reconstructed areas and attempting to use period techniques.
Errett Callahan (1937-2019) was one of the world's most recognised flintknappers, a specialist in shaping stone tools by controlled fracture. Sagnlandet Lejre supported his experimental work as part of its broader programme of hosting archaeologists from around the world.