Assassin's Creed Syndicate includes large chests for you to get blueprints, crafting materials and more you won't usually find throughout the city of London. By the way, they're pretty hard to find in the city, so it might be helpful for you to read our guide where we explain where you have to search for them and what's their loot. The game will also require you to have lock picking skills: you can upgrade them by using experience points gathered during the regular gameplay.
Location: 1
The large chest is on the Royal Exchange's roof, on the southeast side. Loot: Golden Lion Cane-Sword
Location: 2
Enter in the Bank of England from the South entrance and then access the door on the east side. This door will take you to circular room: once you're there, turn left, take the door and you'll reach a larger room. The chest is there, behind a changing screen. Loot: Chimera Gauntlet Schematic
Location: 3
This large chest is placed on a top platform located on the top of the dome (you can see the location in the middle of the map of the city). Loot: Baron Jordan's Finery
Location: 4
Go to St. Bartholomew's Hospital, and search the northwest rooftop. You'll find the large chest between the chimneys. Loot: Hallucinogenic Dart Upgrade II Schematic
Location: 5
On the South side of Cannon Street Station there is a bridge, and that's where you will find the chest. Loot: Jaw Tenderizer
Location: 1
Enter the backside of the clock tower of the Asylum from the roof and drop down one level. Loot: Unique Material – Tanjore Poison
Location: 2
The chest is on the lower roof in rear of Church building (lower left corner on the map). Loot: Light and Dark Cloak
Location: 3
This large chest can be found on the right of the door leading into the north building of the Lambeth Palace (left side of the map). Loot: Unique Material – Bluestone
Location: 1
The chest is at the office on the top floor of Attaway Transport factory building. Loot: Eagle Dive Cape
Location: 2
You'll get the chest by going on the upper level in the center of the factory. Loot: Darbe's Bear Paw
Location: 3
This one is placed in the back of the offices near the window facing the street behind the Train Ticketing Booth. Loot: Lord Pearson's Cane
Location: 4
You'll find the chest on the upper level in the office of metalworking factory. Loot: Unique Material-Rhodium
Location: 1
Find it in decrepit shack next to a window. Watch out the location on the upper right corner of the map. Loot: Large Bullet Pouch Schematic
Location: 2
Go to Charing Cross Station: the large chest is under the railway heading. Loot: Unique Material- Wabar Pearl
Location: 3
Underneath the National Gallery, there is a fence which contains a stand up hiding spot in the east of the Gallery's courtyard. Following that path will lead you sewers: turn left and you'll find the large chest. Loot: Unique Material – Golden Spider Silk
Location: 4
Enter through the door leading into the Fight Club, then go to northwest corner and you'll see the chest against a wall. Loot: Lord Johnathan's Retribution (Knuckles)
Location: 1
The large chest is below the Synch Point on the deck of the ship. Loot: Unique Material- Sea Silk
Location: 1
You need to use your Rope Launcher as there is no entrance on the ground floor. Enter top windows and the large chest is between the two still intact windows. Loot: Master Assassin's Belt
Location: 2
The large chest is on the Westminster Abbey roof at the north most point. Loot: Death Knuckles
Location: 3
Enter in the Palace by jumping through the window from the back side and go to the South room. Assassinate the guards there and collect the chest placed below a painting in front of few royal purple urns. Loot: Eagle Splendor Belt
Location: 4
Enter in the room through the first balcony on the left side of the round center of the building and collect the chest. Loot: Unique Material – Lignum Vitae
Location: 5
Enter through the first balcony which is facing to the water and move right. Chest is right there. Loot: Ulfberht Blade
Location: 1
You'll need to go to the highest roof of the brewing company. Luckily enough, you wil see the chest from Synch Point from north of it. Loot: Rough and Tumble Belt
Location: 2
Go to Spitalfields Market and check the ground level. You'll find the chest next to some baskets of food behind a wall of crates. Loot: Green color shader
Location: 1
The chest is in an area guarded by Templars, specifically on wooden planks next to stack of crates. Loot: Eagle Dive Belt
Location: 2
There is a building in the southwest side of the fort, use your eagle vision to enter into the building undetected. After going in you'll find the chest between some shelves on the south side of the room. Loot: Unique Material – Boudicaa's Torque