Perhaps a thread on this would be good.

There must be various places in just about every country that might appeal to people with primal interests and it could be good to have an expanded list of them with links as a resource for people going on holiday.

It might be just about anything -- rock art, a museum with a good anthropology collection, something to do with food or farming.

I'll suggest two or three in England to get the ball rolling.

Down House at Downe in Kent:

With its unique place in the history of science, Down House, the home of Charles Darwin, is one of the major visitor attractions in the South East. See the study where Darwin wrote 'On the Origin of Species', still as it was when he worked here, and stroll through the extensive gardens that so inspired the great scientist.
Home of Charles Darwin (Down House) | English Heritage

The Royal Botanic Gardens, Kew:

The Royal Botanic Gardens, Kew is one of the world's leading botanic gardens. Holding over 1 in 8 of known plant species, the gardens at Kew and Wakehurst ...
Royal Botanic Gardens, Kew - Welcome To Our Website

British Museum: Department of Africa, Oceania and the Americas

The collection of the Department of Africa, Oceania and the Americas includes around 350,000 objects, representing the cultures of the indigenous peoples of four continents. ... Between 1970 and 1997 the department (then known as the Department of Ethnography) was well known for its lively exhibitions and related activities which took place at the Museum of Mankind. Since it returned to the main Museum site in Bloomsbury, the department has continued to display its collection in permanent galleries ...
British Museum - Africa, Oceania and the Americas