diff --git a/common/buildings/infrastructure.js b/common/buildings/infrastructure.js
index dcaf45c8..783b3e07 100644
--- a/common/buildings/infrastructure.js
+++ b/common/buildings/infrastructure.js
@@ -147,6 +147,32 @@ config.buildings.infrastructure = {
     separate_building_slots: true,
     supply_limit: 5
   },
+  canals: {
+    name: "Canals",
+    singular: "Canal",
+    type: "manufacturing",
+
+    construction_turns: 6,
+    cost: {
+      stone: 15,
+      lumber: 5,
+      regular_steel: 3,
+      money: 5000
+    },
+    manpower_cost: {
+      any_pop_peasants_labourers: {
+        peasants: 1000,
+        labourers: 1000
+      }
+    },
+    maximum: 10,
+    modifiers: {
+      rgo_throughput: 0.01,
+      shipment_capacity: 5
+    },
+    separate_building_slots: true,
+    supply_limit: 10
+  },
   cargo_ports: {
     name: "Cargo Ports",
     singular: "Cargo Port",
diff --git a/common/technology/economic_technology.js b/common/technology/economic_technology.js
index 99a0bbc9..c75ddc7a 100644
--- a/common/technology/economic_technology.js
+++ b/common/technology/economic_technology.js
@@ -91,7 +91,7 @@ config.technology.economic_technology = {
     research_cost: 100,
     year: 1550,
     unlocks: {
-      unlock_building: "sugar_refineries",
+      unlock_building: ["canals", "sugar_refineries"],
       agriculture: 1,
       canals: 1
     }
@@ -1034,8 +1034,9 @@ config.technology.economic_technology = {
     research_cost: 5000,
     year: 1920,
     unlocks: {
-      unlock_building: ["ferrochromite_refineries", "neighbourhoods", "resistor_factories"],
+      unlock_building: ["ferrochromite_refineries", "neighbourhoods", "regional_aeroports", "resistor_factories"],
       industry: 1,
+      regional_aeroports: 1,
       processing_facilities: 2,
       production_efficiency: 0.02,
       construction_speed: -0.05
@@ -1087,6 +1088,7 @@ config.technology.economic_technology = {
     unlocks: {
       unlock_building: ["bus_depots", "bus_stops", "civilian_industries", "department_stores", "sewing_machine_factories", "shampoo_factories", "tantalum_factories", "turbine_manufactories"],
       processing_facilities: 1,
+      regional_aeroports: 2,
       construction_speed: -0.10
     }
   },
@@ -1147,6 +1149,7 @@ config.technology.economic_technology = {
     year: 1937,
     unlocks: {
       railways: 3,
+      regional_aeroports: 1,
       rgo_throughput: 0.05,
       army_travel_speed: 0.025
     }
@@ -1184,7 +1187,7 @@ config.technology.economic_technology = {
     year: 1939,
     unlocks: {
       unlock_building: "wartime_industries",
-      aeroports: 1
+      international_aeroports: 1
     }
   },
   deep_mining: {
@@ -1231,6 +1234,7 @@ config.technology.economic_technology = {
     unlocks: {
       unlock_building: ["motorways", "shopping_centres"],
       motorways: 1,
+      regional_aeroports: 1,
       army_travel_speed: 0.035
     }
   },
@@ -1383,7 +1387,7 @@ config.technology.economic_technology = {
     year: 1964,
     unlocks: {
       unlock_building: "high_speed_rail",
-      aeroports: 1,
+      international_aeroports: 1,
       railways: 2,
       army_travel_speed: 0.04
     }
@@ -1435,7 +1439,7 @@ config.technology.economic_technology = {
     research_cost: 9000,
     year: 1980,
     unlocks: {
-      aeroports: 2,
+      international_aeroports: 2,
       motorways: 3,
       shipment_time: -0.03
     }