diff --git a/Cargo.lock b/Cargo.lock
index 98e9a2c..053c1d3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -7,12 +7,17 @@ name = "glam"
 version = "0.27.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e05e7e6723e3455f4818c7b26e855439f7546cf617ef669d1adedb8669e5cb9"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "hexlab"
 version = "0.1.0"
 dependencies = [
  "hexx",
+ "serde",
+ "serde_json",
 ]
 
 [[package]]
@@ -25,6 +30,18 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "itoa"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
+
+[[package]]
+name = "memchr"
+version = "2.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.89"
@@ -43,6 +60,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "ryu"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
+
 [[package]]
 name = "serde"
 version = "1.0.214"
@@ -63,6 +86,18 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "serde_json"
+version = "1.0.132"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d726bfaff4b320266d395898905d0eba0345aae23b54aee3a737e260fd46db03"
+dependencies = [
+ "itoa",
+ "memchr",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "syn"
 version = "2.0.87"
diff --git a/Cargo.toml b/Cargo.toml
index 4c66e1e..28a3443 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,15 @@
 name = "hexlab"
 version = "0.1.0"
 edition = "2021"
+description = "A hexagonal maze library"
 
 [dependencies]
-hexx = "0.18"
+hexx = { version = "0.18" }
+serde = { version = "1.0", features = ["derive"], optional = true }
+
+[features]
+default = []
+serde = ["dep:serde", "hexx/serde"]
+
+[dev-dependencies]
+serde_json = "1.0"
diff --git a/src/lib.rs b/src/lib.rs
index b93cf3f..e80a3ad 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,14 +1,3 @@
-pub fn add(left: u64, right: u64) -> u64 {
-    left + right
-}
+pub mod maze;
 
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
-    }
-}
+pub use maze::*;
diff --git a/src/maze/maze.rs b/src/maze/maze.rs
new file mode 100644
index 0000000..fdb53cf
--- /dev/null
+++ b/src/maze/maze.rs
@@ -0,0 +1,38 @@
+use std::collections::HashMap;
+
+use hexx::{EdgeDirection, Hex, HexLayout};
+
+use super::{HexTile, Walls};
+
+pub struct HexMaze {
+    pub tiles: HashMap<Hex, HexTile>,
+    pub layout: HexLayout,
+}
+
+impl HexMaze {
+    pub fn new(layout: HexLayout) -> Self {
+        Self {
+            tiles: HashMap::new(),
+            layout,
+        }
+    }
+
+    pub fn add_tile(&mut self, coords: Hex) {
+        let tile = HexTile::new(coords);
+        self.tiles.insert(coords, tile);
+    }
+
+    pub fn add_wall(&mut self, coord: Hex, direction: EdgeDirection) {
+        if let Some(tile) = self.tiles.get_mut(&coord) {
+            tile.walls.add(direction)
+        }
+    }
+
+    pub fn get_tile(&self, coord: &Hex) -> Option<&HexTile> {
+        self.tiles.get(coord)
+    }
+
+    pub fn get_walls(&self, coord: &Hex) -> Option<&Walls> {
+        self.tiles.get(coord).map(|tile| &tile.walls)
+    }
+}
diff --git a/src/maze/mod.rs b/src/maze/mod.rs
new file mode 100644
index 0000000..a0ca907
--- /dev/null
+++ b/src/maze/mod.rs
@@ -0,0 +1,7 @@
+pub mod maze;
+pub mod tile;
+pub mod walls;
+
+pub use maze::HexMaze;
+pub use tile::HexTile;
+pub use walls::Walls;
diff --git a/src/maze/tile.rs b/src/maze/tile.rs
new file mode 100644
index 0000000..0bf099c
--- /dev/null
+++ b/src/maze/tile.rs
@@ -0,0 +1,19 @@
+use hexx::Hex;
+
+use super::Walls;
+
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct HexTile {
+    pub pos: Hex,
+    pub walls: Walls,
+}
+
+impl HexTile {
+    pub fn new(pos: Hex) -> Self {
+        Self {
+            pos,
+            walls: Walls::default(),
+        }
+    }
+}
diff --git a/src/maze/walls.rs b/src/maze/walls.rs
new file mode 100644
index 0000000..f83e3e8
--- /dev/null
+++ b/src/maze/walls.rs
@@ -0,0 +1,60 @@
+use std::ops::{Deref, DerefMut};
+
+use hexx::EdgeDirection;
+
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct Walls(u8);
+
+impl Walls {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn add(&mut self, direction: EdgeDirection) {
+        self.0 |= Self::from(direction).0
+    }
+
+    pub fn remove(&mut self, direction: EdgeDirection) {
+        self.0 &= !Self::from(direction).0
+    }
+
+    pub fn has(&self, direction: EdgeDirection) -> bool {
+        self.0 & Self::from(direction).0 != 0
+    }
+}
+
+impl From<EdgeDirection> for Walls {
+    fn from(value: EdgeDirection) -> Self {
+        let bits = match value.index() {
+            0 => 0b000001,
+            1 => 0b000010,
+            2 => 0b000011,
+            3 => 0b000100,
+            4 => 0b000101,
+            5 => 0b000110,
+            _ => unreachable!(),
+        };
+        Self(bits)
+    }
+}
+
+impl Deref for Walls {
+    type Target = u8;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for Walls {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl Default for Walls {
+    fn default() -> Self {
+        Self(0b111111)
+    }
+}