diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index b359ca0..45dc524 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -76,6 +76,9 @@ jobs:
 
       - name: Run tests
         shell: bash
+        # Bound the step: a hung extension download once stalled Windows jobs
+        # indefinitely (tests themselves finish in seconds).
+        timeout-minutes: 10
         run: pytest tests/ -v
 
       # The abi3 wheel is identical across Python legs; keep just one for
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d341a7..ab860a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## UNRELEASED
 
+### Added
+
+- Enabled the crate's `spatial` feature, so `DRAW spatial` map layers now render through the Vega-Lite writer instead of raising "Spatial visualization requires the 'spatial' feature to be enabled". Spatial layers require DuckDB's `spatial` extension at runtime: ggsql issues `LOAD spatial` automatically but never `INSTALL` it, so run `INSTALL spatial` once per machine (e.g. via `DuckDBReader.execute_sql()`; the download is cached under `~/.duckdb/extensions`). Works with WKB geometry columns and the built-in `ggsql:world` dataset, including named map projections such as `PROJECT TO equal_earth`.
+
 ### Changed
 
 - Data now crosses the Python↔Rust boundary via the zero-copy Arrow C Data Interface instead of Arrow IPC serialization, reducing memory copies and peak RSS for large results (on a 1M-row × 50-col register+read microbenchmark: ~5.7× faster, ~1 GB lower peak RSS). Set `GGSQL_ARROW_IPC=1` to restore the previous IPC behavior. The minimum pyarrow version is now 15.
diff --git a/Cargo.lock b/Cargo.lock
index 60ea8de..f699651 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -617,7 +617,7 @@ dependencies = [
  "comfy-table",
  "fallible-iterator",
  "fallible-streaming-iterator",
- "hashlink",
+ "hashlink 0.10.0",
  "libduckdb-sys",
  "num",
  "num-integer",
@@ -828,6 +828,43 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "geo-types"
+version = "0.7.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94776032c45f950d30a13af6113c2ad5625316c9abfbccee4dd5a6695f8fe0f5"
+dependencies = [
+ "approx",
+ "num-traits",
+ "serde",
+]
+
+[[package]]
+name = "geojson"
+version = "0.24.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e26f3c45b36fccc9cf2805e61d4da6bc4bbd5a3a9589b01afa3a40eff703bd79"
+dependencies = [
+ "log",
+ "serde",
+ "serde_json",
+ "thiserror 2.0.18",
+]
+
+[[package]]
+name = "geozero"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5f28f34864745eb2f123c990c6ffd92c1584bd39439b3f27ff2a0f4ea5b309b"
+dependencies = [
+ "geojson",
+ "log",
+ "scroll",
+ "serde_json",
+ "thiserror 1.0.69",
+ "wkt",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.2.17"
@@ -881,10 +918,12 @@ dependencies = [
  "csscolorparser",
  "duckdb",
  "fontique",
+ "geozero",
  "hephaestus",
  "palette",
  "rand 0.8.6",
  "regex",
+ "rusqlite",
  "serde",
  "serde_json",
  "sprintf",
@@ -946,6 +985,15 @@ dependencies = [
  "foldhash 0.1.5",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.16.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
+dependencies = [
+ "foldhash 0.2.0",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.17.0"
@@ -964,6 +1012,15 @@ dependencies = [
  "hashbrown 0.15.5",
 ]
 
+[[package]]
+name = "hashlink"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "824e001ac4f3012dd16a264bec811403a67ca9deb6c102fc5049b32c4574b35f"
+dependencies = [
+ "hashbrown 0.16.1",
+]
+
 [[package]]
 name = "heck"
 version = "0.5.0"
@@ -1468,6 +1525,17 @@ dependencies = [
  "redox_syscall 0.7.4",
 ]
 
+[[package]]
+name = "libsqlite3-sys"
+version = "0.36.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95b4103cffefa72eb8428cb6b47d6627161e51c2739fc5e3b734584157bc642a"
+dependencies = [
+ "cc",
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "linebender_resource_handle"
 version = "0.1.1"
@@ -2307,6 +2375,32 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "rsqlite-vfs"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c51c9ae4df8a7fba42103df5c621fa3c37eccf3a3c650879e90fc48b11cc192c"
+dependencies = [
+ "hashbrown 0.16.1",
+ "thiserror 2.0.18",
+]
+
+[[package]]
+name = "rusqlite"
+version = "0.38.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1c93dd1c9683b438c392c492109cb702b8090b2bfc8fed6f6e4eb4523f17af3"
+dependencies = [
+ "bitflags",
+ "chrono",
+ "fallible-iterator",
+ "fallible-streaming-iterator",
+ "hashlink 0.11.1",
+ "libsqlite3-sys",
+ "smallvec",
+ "sqlite-wasm-rs",
+]
+
 [[package]]
 name = "rust_decimal"
 version = "1.41.0"
@@ -2418,6 +2512,12 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
+[[package]]
+name = "scroll"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04c565b551bafbef4157586fa379538366e4385d42082f255bfd96e4fe8519da"
+
 [[package]]
 name = "seahash"
 version = "4.1.0"
@@ -2561,6 +2661,18 @@ dependencies = [
  "thiserror 2.0.18",
 ]
 
+[[package]]
+name = "sqlite-wasm-rs"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b2c760607300407ddeaee518acf28c795661b7108c75421303dbefb237d3a36"
+dependencies = [
+ "cc",
+ "js-sys",
+ "rsqlite-vfs",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "stable_deref_trait"
 version = "1.2.1"
@@ -3553,6 +3665,18 @@ dependencies = [
  "wasmparser",
 ]
 
+[[package]]
+name = "wkt"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "54f7f1ff4ea4c18936d6cd26a6fd24f0003af37e951a8e0e8b9e9a2d0bd0a46d"
+dependencies = [
+ "geo-types",
+ "log",
+ "num-traits",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "writeable"
 version = "0.6.3"
diff --git a/Cargo.toml b/Cargo.toml
index 4f7c073..fc3a265 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ crate-type = ["cdylib"]
 [dependencies]
 pyo3 = { version = "0.26", features = ["extension-module", "abi3-py310"] }
 arrow = { version = "58", default-features = false, features = ["ipc", "ffi"] }
-ggsql = { version = "0.5.2", default-features = false, features = ["duckdb", "vegalite", "builtin-data", "svg", "pdf", "hep"] }
+ggsql = { version = "0.5.2", default-features = false, features = ["duckdb", "vegalite", "builtin-data", "svg", "pdf", "hep", "spatial"] }
 
 [features]
 default = []
diff --git a/tests/test_ggsql.py b/tests/test_ggsql.py
index a02acfc..3d47051 100644
--- a/tests/test_ggsql.py
+++ b/tests/test_ggsql.py
@@ -218,6 +218,57 @@ def test_render_multi_layer(self):
         assert "layer" in spec_dict
 
 
+class TestSpatial:
+    """Tests for spatial (map) layers via the VegaLiteWriter."""
+
+    @pytest.fixture(scope="class", autouse=True)
+    def install_spatial_extension(self):
+        """Install DuckDB's spatial extension (the ggsql crate only LOADs it).
+
+        The binary is cached per DuckDB version/platform under
+        ~/.duckdb/extensions, so this downloads at most once per machine.
+        """
+        reader = ggsql.DuckDBReader("duckdb://memory")
+        try:
+            reader.execute_sql("INSTALL spatial")
+        except Exception as e:
+            pytest.skip(f"DuckDB spatial extension unavailable (offline?): {e}")
+
+    def test_render_spatial_builtin_world(self):
+        reader = ggsql.DuckDBReader("duckdb://memory")
+        spec = reader.execute("VISUALISE FROM ggsql:world DRAW spatial")
+        writer = ggsql.VegaLiteWriter()
+
+        result = writer.render(spec)
+        spec_dict = json.loads(result)
+        marks = [
+            layer["mark"]["type"] if isinstance(layer["mark"], dict) else layer["mark"]
+            for layer in spec_dict["layer"]
+        ]
+        assert "geoshape" in marks
+
+    def test_render_spatial_choropleth(self):
+        reader = ggsql.DuckDBReader("duckdb://memory")
+        spec = reader.execute(
+            "VISUALISE FROM ggsql:world DRAW spatial MAPPING population AS fill"
+        )
+        writer = ggsql.VegaLiteWriter()
+
+        result = writer.render(spec)
+        assert "geoshape" in result
+
+    def test_render_chart_spatial(self):
+        reader = ggsql.DuckDBReader("duckdb://memory")
+        spec = reader.execute("VISUALISE FROM ggsql:world DRAW spatial")
+        writer = ggsql.VegaLiteWriter()
+
+        chart = writer.render_chart(spec)
+        assert isinstance(chart, altair.TopLevelMixin)
+        # The chart survives Altair-level round-tripping (this is how the
+        # spec reaches the browser widget)
+        assert "projection" in chart.to_dict()
+
+
 class TestRenderAltairDataFrameConversion:
     """Tests for DataFrame handling in render_altair()."""