Rejans (now 1924 Istanbul) restaurant, at the end of the Olivio (Olivya) Passageway is one of Beyoğlu’s landmarks. A relic of 1920s “Russian Istanbul”, where the original atmosphere has been preserved. Though the restaurant has always been incredibly popular, there is not much information about it. According to newspaper articles and advertisements, a restaurant called La Régence (Rejans in French) already existed in Istanbul (Grand Rue de Péra 76, now presumably İstiklal Caddesi 30) in the early 1920s. Despite the fact that its owner, Marius Berthet, was French, the restaurant was very popular with Russians. This was most likely because the owner paid great attention to the entertainment programme and hired Russian-speaking waiters. According to documents from the Republican archives of the Prime Ministry (Turkey), the restaurant was still functioning in 1924, but Berthet himself was clearly in trouble. In February of that year his wines were taken from his home by local police officers who strangely failed to show him their warrant cards, and two months later, in April, some items were officially confiscated from the restaurant. The details and sequence of events are unknown but we can assume that Berthet's troubles did not end there as he was forced to close the restaurant. Its name was taken over by other people years later.

The site of today's 1924 Istanbul restaurant (Olivya Gç. 7–A), was originally occupied by the Trianon beer hall, then, from 1924, by the Turkuaz/Turkuvaz restaurant. Rejans opened its doors between 1930 and 1934 (unfortunately, the sources do not agree on dates). Its founders were Veronika Protopopova, Vera Chirik, and Tevfik Manars (according to Marina Sığırcı, a Russian Jew who preferred to call himself in a Turkish manner). In the 1940s, the place was teeming with spies, in the 1950s, it was a regular haunt  of officials and ambassadors, and in the 1960s, it became a favourite restaurant of writers, poets and intellectuals. In 1976, the building was badly damaged by fire. According to Marina Sığırcı, the famous fashion historian Alexander Vasiliev was later invited to recreate the interior. The restaurant changed hands many times, but its features (except, perhaps, the tradition of drinking tea with bubliks at 4-5 o’clock in the afternoon) remained unchanged: delicious food (beef stroganoff, chicken Kiev, borsch, pirozhkis, etc.); lemon vodka according to an old recipe, which local people often call “yellow vodka”; excellent music (once, gypsy songs, a balalaika orchestra and beautiful Madame Taskina at the piano, but now accordion music performed by Edward Aris). It would be impossible to list all of Rejans' celebrity guests, who ranged from Greta Garbo and Agatha Christie to İbrahim Çallı and Ara Güler, but perhaps the most famous regular diner was Atatürk (he also frequented the Pera Palace Hotel), whose table number 2 is reserved forever. The closing of the restaurant in 2011 was a great loss but, to everyone’s surprise and delight, the restaurant reopened its doors in 2015 - this time under the name 1924 Istanbul.