diff --git a/poetry.lock b/poetry.lock
index e910b03..23df10c 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -85,6 +85,17 @@ packaging = "*"
 six = ">=1.9.0"
 webencodings = "*"
 
+[[package]]
+name = "branca"
+version = "0.4.1"
+description = "Generate complex HTML+JS pages with Python"
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+jinja2 = "*"
+
 [[package]]
 name = "certifi"
 version = "2020.6.20"
@@ -179,6 +190,62 @@ category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "folium"
+version = "0.11.0"
+description = "Make beautiful maps with Leaflet.js & Python"
+category = "main"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+branca = ">=0.3.0"
+jinja2 = ">=2.9"
+numpy = "*"
+requests = "*"
+
+[package.extras]
+testing = ["pytest"]
+
+[[package]]
+name = "geographiclib"
+version = "1.50"
+description = "The geodesic routines from GeographicLib"
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "geopy"
+version = "2.0.0"
+description = "Python Geocoding Toolbox"
+category = "main"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+geographiclib = ">=1.49,<2"
+
+[package.extras]
+aiohttp = ["aiohttp"]
+dev = ["async-generator", "flake8 (>=3.6.0,<3.7.0)", "isort (>=4.3.4,<4.4.0)", "coverage", "pytest-aiohttp", "pytest (>=3.10)", "readme-renderer", "sphinx", "sphinx-rtd-theme (>=0.4.0)"]
+dev-docs = ["readme-renderer", "sphinx", "sphinx-rtd-theme (>=0.4.0)"]
+dev-lint = ["async-generator", "flake8 (>=3.6.0,<3.7.0)", "isort (>=4.3.4,<4.4.0)"]
+dev-test = ["async-generator", "coverage", "pytest-aiohttp", "pytest (>=3.10)"]
+requests = ["urllib3 (>=1.24.2)", "requests (>=2.16.2)"]
+timezone = ["pytz"]
+
+[[package]]
+name = "googlemaps"
+version = "4.4.2"
+description = "Python client library for Google Maps Platform"
+category = "main"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+requests = ">=2.20.0,<3.0"
+
 [[package]]
 name = "identify"
 version = "1.5.6"
@@ -986,7 +1053,7 @@ tests = ["pytest", "pytest-cov", "codecov", "scikit-build", "cmake", "ninja", "p
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.8"
-content-hash = "0483228a1bbf92c52f5045db05de80b951dbd7302db756ca6f65cd56b482b814"
+content-hash = "d195ae57b5a36e1ddf290a2daafc9f99544c7a19b15e966b011cfee8435ad2b1"
 
 [metadata.files]
 appdirs = [
@@ -1035,6 +1102,10 @@ bleach = [
     {file = "bleach-3.2.1-py2.py3-none-any.whl", hash = "sha256:9f8ccbeb6183c6e6cddea37592dfb0167485c1e3b13b3363bc325aa8bda3adbd"},
     {file = "bleach-3.2.1.tar.gz", hash = "sha256:52b5919b81842b1854196eaae5ca29679a2f2e378905c346d3ca8227c2c66080"},
 ]
+branca = [
+    {file = "branca-0.4.1-py3-none-any.whl", hash = "sha256:84eb4a2cc2c6f988c7ed07523de18c9867baeac3539a24cb3b66c255399bb1c5"},
+    {file = "branca-0.4.1.tar.gz", hash = "sha256:8a9df7811a4d845ffaddad1030075cf26157c91d0be10b4f800ef1c8b3caedb8"},
+]
 certifi = [
     {file = "certifi-2020.6.20-py2.py3-none-any.whl", hash = "sha256:8fc0819f1f30ba15bdb34cceffb9ef04d99f420f68eb75d901e9560b8749fc41"},
     {file = "certifi-2020.6.20.tar.gz", hash = "sha256:5930595817496dd21bb8dc35dad090f1c2cd0adfaf21204bf6732ca5d8ee34d3"},
@@ -1112,6 +1183,21 @@ filelock = [
     {file = "filelock-3.0.12-py3-none-any.whl", hash = "sha256:929b7d63ec5b7d6b71b0fa5ac14e030b3f70b75747cef1b10da9b879fef15836"},
     {file = "filelock-3.0.12.tar.gz", hash = "sha256:18d82244ee114f543149c66a6e0c14e9c4f8a1044b5cdaadd0f82159d6a6ff59"},
 ]
+folium = [
+    {file = "folium-0.11.0-py2.py3-none-any.whl", hash = "sha256:8a819fe19791411fc7c7202ae597787e7b4b5189b23f43756931d2ff73a48f4a"},
+    {file = "folium-0.11.0.tar.gz", hash = "sha256:540789abc21872469e52c59ac3962c61259a8df557feadd6514eb23eb0a64ca7"},
+]
+geographiclib = [
+    {file = "geographiclib-1.50-py3-none-any.whl", hash = "sha256:51cfa698e7183792bce27d8fb63ac8e83689cd8170a730bf35e1a5c5bf8849b9"},
+    {file = "geographiclib-1.50.tar.gz", hash = "sha256:12bd46ee7ec25b291ea139b17aa991e7ef373e21abd053949b75c0e9ca55c632"},
+]
+geopy = [
+    {file = "geopy-2.0.0-py3-none-any.whl", hash = "sha256:fdc596bab67d9f4828f43bf9e97c4e0a1d1518b7c2357485cef0e1c3cf470220"},
+    {file = "geopy-2.0.0.tar.gz", hash = "sha256:b88e189f0d2e0051da45b6311d5b2ced59afaf1378eb27ebb57eaf37c166a03b"},
+]
+googlemaps = [
+    {file = "googlemaps-4.4.2.tar.gz", hash = "sha256:8e13cbecc9b5b0462d53a78074c166753027be285db0c9fff70f5b40241ce500"},
+]
 identify = [
     {file = "identify-1.5.6-py2.py3-none-any.whl", hash = "sha256:3139bf72d81dfd785b0a464e2776bd59bdc725b4cc10e6cf46b56a0db931c82e"},
     {file = "identify-1.5.6.tar.gz", hash = "sha256:969d844b7a85d32a5f9ac4e163df6e846d73c87c8b75847494ee8f4bd2186421"},
diff --git a/pyproject.toml b/pyproject.toml
index aa92bb6..805d7a3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,6 +16,11 @@ python = "^3.8"
 jupyterlab = "^2.2.8"
 numpy = "^1.19.2"
 
+# Chapter 11: "A Traveling Salesman Problem" exercises
+folium = "^0.11.0"
+geopy = "^2.0.0"
+googlemaps = "^4.4.2"
+
 [tool.poetry.dev-dependencies]
 # Task runners
 nox = "^2020.8.22"