Romania does not automatically leap to mind as a possible location for Atlantis, nevertheless, in 1913 a massive book by Nicolae Densusianu was published in which such a claim was made. The suggestion was made en passant in this large work, which is mainly concerned with the prehistoric evolution of civilisation in the Dacia region of Romania. The 1000-page+ book in English is available in its entirety on the Internet.
The Pannonian Plain, now part of Hungary was formerly part of ancient Dacia. A paper was submitted to the 2008 Atlantis Conference in Athens by three Romanian researchers, M. Ticleanu, P. Constanin and R. Nicolescu proposing that this region had been the original location of Atlantis. This paper, together with a large number of maps, is now available on the internet(a).
The location of the Pillars of Heracles is also discussed in depth and the author not unexpectedly also locates them along the Danube (Pt3 – Ch.XVI). It is noteworthy that in ancient times the Danube was called Okeanos Potamos.
To what extent nationalistic motives were the moving force behind this noteworthy tome is difficult to ascertain, but the possibility should be borne in mind. However, his excessive nationalism, was popular during the communist regime, but is now deemed unacceptable and his work discredited.
In the meantime, neighbouring Bulgaria had seen the unearthing of remarkable artefacts, including gold jewellery, dating to 3000 BC and is now claiming the discovery of rock temples in the Rhodope Mountains that are a thousand years older than the Mesopotamian and Egyptian civilisations. Watch this space.
Britain as the home of Atlantis has been claimed by many writers and not without undertones of nationalism by some of the British authors. Nevertheless, support for the idea has been offered by a number of the more disinterested researchers. Probably the first to advance this idea was John Wallis in 1700, who proposed that the Atlantis story had been corrupted over time and was a reference to the destruction of the landbridge that had existed between France and England, leaving a British Atlantis more isolated (The original Brexit!). It was nearly a century later that the idea was taken up by Thomas Pennant. More than another century passed before Cooper, Spence, Beaumont and Calestani produced related theories. Fast forward to the 21st century, when Donald Ingram identifies the Wessex II culture as Atlantean and Melville Nicholls considers Britain to be one of the Atlantean islands referred to by Plato.
The precise location, the exact date and the probable cause of the destruction of Atlantis are the basis for a range of theories. There is general acceptance that following the deglaciation at the end of the last Ice Age vast regions of low-lying land that had linked Ireland and Britain to mainland Europe were gradually flooded.
One school of thought is that these flooded regions contained Atlantis, of which the most extensive was in the North Sea and is now known as Doggerland. Other offshore locations proposed for Atlantis are the Celtic Shelf (Gidon, Steuerwald & Koudroiavtsev) and the Irish Sea (Dunbavin). These lands had been settled and following the inundations its inhabitants forced to retreat to the higher ground of what is modern Europe and the British Isles.
>David L. Hildebrandt in Atlantis-The Reawakening  proposes a reworking of the ‘Atlantis in Britain’ theory with some new perspectives. For me, his dating, location and identity of the Atlanteans does not ring true, particularly why Stone Age people in Southern Britain would want to launch an attack on Athens, over 2,000 miles away, a city-state which did not even exist at the time. Those early Britons did not have the wheel, yet Plato tells us that the Atlanteans had chariots!<
E. J. de Meester on his now defunct website postulated a link between Stonehenge and Atlantis(b). After arbitrarily dividing Plato’s dimensions by ten, he suggested that the plain described by Plato lay in a rectangle between Salisbury and Chichester.
The Arctic Region offers evidence of human activity as long as 45,000 years ago, 10,000 years earlier than previously thought, according to a report(f) in 2016.
Of interest to us is that Spitzbergen was proposed as the location of Atlantis by the French astronomer Jean Silvain Bailly in the 18th century. In 1885 Dr. W. F. Warren,a former president of Boston University published a bookthat proposed that the cradle of the human race was situated at the North Pole and had been inundated at the time of the Deluge. Warren’s book can now be accessed on-line(d).
Bal Gangadar Tilak, an Indian independence campaigner, was so impressed by Warren’s ideas that in his own book, Arctic Home in the Vedas, he chose to locate the lost Paradise of Airyana Vaejo in the Arctic.
Modern Russian nationalism seems to have adopted some of the dafter notions of Nazi Germany including the idea of an Aryan master race, from which they claim to be descended, that was formerly located in the Arctic. It was revealed in 2016 that a former Nazi base had been discovered in the Arctic, which had been used to search for ancient artifacts(g).
Such ideas are expounded by the new darling of Russian neo-fascism, Alexander Dugin, who likes to blend nationalism with mysticism. It is rather worrying that some elements of this nationalism have also adopted anti-semitism as part of their rhetoric(b).
More recently Professor Sergey Teleguin has again drawn attention to Tilak’s work in an articlewhich identifies elements in the Mayan Popul Vuh, which suggest that its origins were in the far north, in Ultima Thule. He concludes with the thought that perhaps the Indo-European and Mayan ancestors came from the true North Pole! Teleguin has outlined his ideas further in an article for (Nov/Dec 2013) Issue 102 of Atlantis Rising magazine.
(b) https://sicsa.huji.ac.il/13shnir.html (Link Broken Aug. 2017) (See Archive 2415)
Nationalism was clearly the motivation behind some of the Atlantis theories that have been proposed over recent centuries. Olaf Rudbeck audaciously promoted his native Sweden in the 17th century, just as the eccentric William Comyns Beaumont claimed that Britain was Atlantis in the early 20th century and some Albanians, Azoreans, Maltese and Sardinians make comparable claims today. However, the most sinister manifestation of Atlantis based nationalism was the attempt to hijack it as the original homeland of the Aryan predecessors of the Nazis, probably borrowing the idea from Blavatsky. This was partly to replace the Abrahamic cultural lineage claimed by so many western nations. Today elements of modern Russian nationalism also look to an Aryan ancestry based in the Arctic.
*The linking of nationalism with (pseudo)archaeology is exemplified by the Bosnian pyramid claims of Samir Osmanagich and the manner in which the local media and politicians have used them to boost national pride, in spite of the contrary views expressed by qualified geologists and archaeologists(b).*
Vanessa Ward gives a good overview of the Atlantis based nationalism of both Rudbeck and the Nazis(a).