Ruski Car or Russian Tsar (Serbian: Руски цар) is a commercial-residential building and a restaurant in downtown Belgrade, the capital of Serbia.

[3][4] During the Ottoman period, they constructed an aqueduct (đeriz), to conduct water from the springs in the area of Veliki Mokri Lug.

In downtown, they built three water towers: one at Terazije, another at modern Ruski Car and third where Grčka Kraljica is today.

The name of the tavern was changed to "Zagreb", the original luxurious interior was demolished and the expensive cutlery was replaced with the plastic plates.

In the 1990s it leased it to the Serbian-Australian Jack Samardžija, who restored the venue to resemble the pre-1960 look and renamed it back to Ruski Car.

Zoran Antonijević, whose father and other relatives constructed the building and were the owners since 1934, applied for the edifice to be returned to him when the process of the restitution of the confiscated properties began in Serbia.

[7][8][9][10][11] Vapiano left the premises in January 2016[12] and by this time the state quit prosecuting Bulić for tax evasion, so he remained the owner.

[11] In October 2016 news appeared claiming that the first Belgrade's Hard Rock Café will be open in the building of Ruski Car.

First, they removed the original exterior frieze made of wrought iron and demolished part of the wall on the Knez Mihailova side, to open a new door.

A platform for the ventilation, 20 m2 (220 sq ft) large and weighing one ton, was placed on the 90 years old roof, which immediately began to leak.

The decorations bear elements of neo-baroque in the design of the corner dome, whereas the corpus of the building is much closer to the academic variant of Art Nouveau, specifically the secession.

[6] The tavern is situated within the Knez Mihailova Spatial Cultural-Historical Unit of Exceptional Importance, which was declared in 1979, by "The Official Gazette of the Socialist Republic of Serbia", No.