A century ago, one section of Vienna played host to Adolf Hitler, Leon Trotsky, Joseph Tito, Sigmund Freud and Joseph Stalin.
In January 1913, a man whose passport bore the name Stavros Papadopoulos disembarked from the Krakow train at Vienna’s North Terminal station.
Of dark complexion, he sported a large peasant’s moustache and carried a very basic wooden suitcase.
“I was sitting at the table,” wrote the man he had come to meet, years later, “when the door opened with a knock and an unknown man entered.
“He was short… thin… his greyish-brown skin covered in pockmarks… I saw nothing in his eyes that resembled friendliness.”
The writer of these lines was a dissident Russian intellectual, the editor of a radical newspaper called Pravda (Truth). His name was Leon Trotsky.
The man he described was not, in fact, Papadopoulos.
He had been born Iosif Vissarionovich Dzhugashvili, was known to his friends as Koba and is now remembered as Joseph Stalin.
Trotsky and Stalin were just two of a number of men who lived in central Vienna in 1913 and whose lives were destined to mould, indeed to shatter, much of the 20th century.
It was a disparate group. The two revolutionaries, Stalin and Trotsky, were on the run. Sigmund Freud was already well established.
The psychoanalyst, exalted by followers as the man who opened up the secrets of the mind, lived and practised on the city’s Berggasse.
The young Josip Broz, later to find fame as Yugoslavia’s leader Marshal Tito, worked at the Daimler automobile factory in Wiener Neustadt, a town south of Vienna, and sought employment, money and good times.
Then there was the 24-year-old from the north-west of Austria whose dreams of studying painting at the Vienna Academy of Fine Arts had been twice dashed and who now lodged in a doss-house in Meldermannstrasse near the Danube, one Adolf Hitler.