This year again, lots of Moscow museum will open their doors to visitors for free every third Sunday of the month.
According to the official portal of the Moscow mayor and government, 40 museums have joined the action. For the first time, the exhibition hall "The Ark" with the paragons of the 20^th century paintings is among them.
The action extends to both permanent and temporary exhibitions of galleries under the jurisdiction of the RF Culture Department. That is, the Tretyakov Gallery and other federal museums will not be accessible for free.
But the Sunday cultural and budget program includes the memorial museums of Marina Tsvetaeva and Mikhail Bulgakov, the picture galleries of Ilya Glazunov and Alexander Shilov, as well as large-scale military historical exhibitions, such as those at an exhibition hall dedicated to the Soviet campaign in Afghanistan and the Moscow Defense Museum. Traditionally, the Darwin and Timiryazev Museums, interesting to people of all ages, participate in the project as well.
Among the most noteworthy places is the "Northern Tushino" museum and park complex. It presents a real submarine, B-396: the vessel was on service in the Atlantic Ocean and off the coast of Africa, and patrolled the Mediterranean, Norwegian and Barents seas. In the late 1990s the submarine was decommissioned and re-equipped as a museum. The vessel floated from Severodvinsk to the capital city of Russia through the Moscow canal and is now based in Tushino. Visitors will see samples of the weapons and interior construction of the submarine, and get acquainted with the life of submariners.  

Complete List of the Museums Participating in the Action:
- Kuskovo State Museum of Ceramics and Estate of the 18^th century;
- Moscow State Unified Museum-Reserve;
- "Tsaritsyno" Historical, Architectural, Art and Landscape Museum-Reserve;
- "Museum of Moscow" association;
- The State Museum of Moscow Defense;
- The Gulag History Museum;
- "The Garden Ring" Museum;
- Museum of Zelenograd;
- "History of the T-34 Tank" museum complex;
- Memorial Museum of Astronautics;
- Darwin State Museum;
- Timiryazev State Biological Museum;
- Scriabin Memorial Museum;
- Alexander Pushkin State Museum;
- Marina Tsvetaeva's House-Museum;
- Moscow Museum of Literature - the K.G. Paustovsky center;
- Mikhail Bulgakov Museum;
- Sergey Yesenin Moscow State Museum;
- Nikolay Ostrovsky Museum and Cultural Center "Integration";
- Alexander Solzhenitsyn House of Russian Abroad;
- The Moscow Museum of Modern Art;
- The Manezh Museum and Exhibition Association;
- Museum of V.A. Tropinin and Moscow Artists of his Epoch;
- Ilya Glazunov Moscow State Picture Gallery;
- A. Shilov Moscow State Picture Gallery;
- "Burganov's House" Moscow State Museum;
- "Chekhov's House"Exhibition Hall, a branch of the Vasily Nesterenko State Picture Gallery;
- "Fashion Museum" Exhibition Center;
- Museum of Russian Lubok and Naive Art;
- "Solyanka VPA" Exhibition Hall;
- "Exhibition Halls of Moscow" Association;
- "Gallery AZ" State Exhibition Hall;
- Tushino  Exhibition Hall;
- "The Ark" exhibition hall;
- "Northern Tushino" museum and park complex;
- Nikolay Gogol House Memorial Museum and Scientific Library;
- Sergei Andriyaka Moscow State Watercolor School with a museum and exhibition complex;
- Museum in the Gorky Central Park of Culture and Recreation.