diff --git a/docs/datastructures.md b/docs/datastructures.md
new file mode 100644
index 00000000..e69de29b
diff --git a/docs/graphql.md b/docs/graphql.md
index f1fd582a..c3e96e5f 100644
--- a/docs/graphql.md
+++ b/docs/graphql.md
@@ -20,7 +20,7 @@ schema = graphene.Schema(query=Query)
 
 
 app = Starlette()
-app.add_route('/', GraphQLApp(schema=schema))
+app.add_route('/', GraphQLApp(schema=schema), methods=['GET', 'POST'])
 ```
 
 ## Sync or Async executors
@@ -51,5 +51,5 @@ schema = graphene.Schema(query=Query)
 
 
 app = Starlette()
-app.add_route('/', GraphQLApp(schema=schema, executor=AsyncioExecutor()))
+app.add_route('/', GraphQLApp(schema=schema, executor=AsyncioExecutor()), methods=['GET', 'POST'])
 ```
diff --git a/starlette/graphql.py b/starlette/graphql.py
index 38996a84..acd35389 100644
--- a/starlette/graphql.py
+++ b/starlette/graphql.py
@@ -1,9 +1,10 @@
 from starlette import status
-from starlette.responses import PlainTextResponse, Response, JSONResponse
+from starlette.responses import PlainTextResponse, Response, JSONResponse, HTMLResponse
 from starlette.requests import Request
 from starlette.types import ASGIInstance, Receive, Scope, Send
 import asyncio
 import functools
+import json
 import typing
 
 try:
@@ -29,11 +30,14 @@ class GraphQLApp:
 
     async def asgi(self, receive: Receive, send: Send, scope: Scope) -> None:
         request = Request(scope, receive=receive)
-        response = await self.handler(request)
+        response = await self.handle_graphql(request)
         await response(receive, send)
 
-    async def handler(self, request: Request) -> Response:
+    async def handle_graphql(self, request: Request) -> Response:
         if request.method == "GET":
+            if "text/html" in request.headers.get("Accept", ""):
+                return await self.handle_graphiql(request)
+
             data = request.query_params  # type: typing.Mapping[str, typing.Any]
 
         elif request.method == "POST":
@@ -95,3 +99,142 @@ class GraphQLApp:
             )
             loop = asyncio.get_event_loop()
             return await loop.run_in_executor(None, func, query)
+
+    async def handle_graphiql(self, request: Request) -> Response:
+        text = GRAPHIQL.replace("{{REQUEST_PATH}}", json.dumps(request.url.path))
+        return HTMLResponse(text)
+
+
+GRAPHIQL = """
+<!--
+ *  Copyright (c) Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the license found in the
+ *  LICENSE file in the root directory of this source tree.
+-->
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        height: 100%;
+        margin: 0;
+        width: 100%;
+        overflow: hidden;
+      }
+      #graphiql {
+        height: 100vh;
+      }
+    </style>
+    <!--
+      This GraphiQL example depends on Promise and fetch, which are available in
+      modern browsers, but can be "polyfilled" for older browsers.
+      GraphiQL itself depends on React DOM.
+      If you do not want to rely on a CDN, you can host these files locally or
+      include them directly in your favored resource bunder.
+    -->
+    <link href="//cdn.jsdelivr.net/npm/graphiql@0.12.0/graphiql.css" rel="stylesheet"/>
+    <script src="//cdn.jsdelivr.net/npm/whatwg-fetch@2.0.3/fetch.min.js"></script>
+    <script src="//cdn.jsdelivr.net/npm/react@16.2.0/umd/react.production.min.js"></script>
+    <script src="//cdn.jsdelivr.net/npm/react-dom@16.2.0/umd/react-dom.production.min.js"></script>
+    <script src="//cdn.jsdelivr.net/npm/graphiql@0.12.0/graphiql.min.js"></script>
+  </head>
+  <body>
+    <div id="graphiql">Loading...</div>
+    <script>
+      /**
+       * This GraphiQL example illustrates how to use some of GraphiQL's props
+       * in order to enable reading and updating the URL parameters, making
+       * link sharing of queries a little bit easier.
+       *
+       * This is only one example of this kind of feature, GraphiQL exposes
+       * various React params to enable interesting integrations.
+       */
+      // Parse the search string to get url parameters.
+      var search = window.location.search;
+      var parameters = {};
+      search.substr(1).split('&').forEach(function (entry) {
+        var eq = entry.indexOf('=');
+        if (eq >= 0) {
+          parameters[decodeURIComponent(entry.slice(0, eq))] =
+            decodeURIComponent(entry.slice(eq + 1));
+        }
+      });
+      // if variables was provided, try to format it.
+      if (parameters.variables) {
+        try {
+          parameters.variables =
+            JSON.stringify(JSON.parse(parameters.variables), null, 2);
+        } catch (e) {
+          // Do nothing, we want to display the invalid JSON as a string, rather
+          // than present an error.
+        }
+      }
+      // When the query and variables string is edited, update the URL bar so
+      // that it can be easily shared
+      function onEditQuery(newQuery) {
+        parameters.query = newQuery;
+        updateURL();
+      }
+      function onEditVariables(newVariables) {
+        parameters.variables = newVariables;
+        updateURL();
+      }
+      function onEditOperationName(newOperationName) {
+        parameters.operationName = newOperationName;
+        updateURL();
+      }
+      function updateURL() {
+        var newSearch = '?' + Object.keys(parameters).filter(function (key) {
+          return Boolean(parameters[key]);
+        }).map(function (key) {
+          return encodeURIComponent(key) + '=' +
+            encodeURIComponent(parameters[key]);
+        }).join('&');
+        history.replaceState(null, null, newSearch);
+      }
+      // Defines a GraphQL fetcher using the fetch API. You're not required to
+      // use fetch, and could instead implement graphQLFetcher however you like,
+      // as long as it returns a Promise or Observable.
+      function graphQLFetcher(graphQLParams) {
+        // This example expects a GraphQL server at the path /graphql.
+        // Change this to point wherever you host your GraphQL server.
+        return fetch({{REQUEST_PATH}}, {
+          method: 'post',
+          headers: {
+            'Accept': 'application/json',
+            'Content-Type': 'application/json',
+          },
+          body: JSON.stringify(graphQLParams),
+          credentials: 'include',
+        }).then(function (response) {
+          return response.text();
+        }).then(function (responseBody) {
+          try {
+            return JSON.parse(responseBody);
+          } catch (error) {
+            return responseBody;
+          }
+        });
+      }
+      // Render <GraphiQL /> into the body.
+      // See the README in the top level of this module to learn more about
+      // how you can customize GraphiQL by providing different values or
+      // additional child elements.
+      ReactDOM.render(
+        React.createElement(GraphiQL, {
+          fetcher: graphQLFetcher,
+          query: parameters.query,
+          variables: parameters.variables,
+          operationName: parameters.operationName,
+          onEditQuery: onEditQuery,
+          onEditVariables: onEditVariables,
+          onEditOperationName: onEditOperationName
+        }),
+        document.getElementById('graphiql')
+      );
+    </script>
+  </body>
+</html>
+"""
diff --git a/tests/test_graphql.py b/tests/test_graphql.py
index e4435b9e..a7b50b1e 100644
--- a/tests/test_graphql.py
+++ b/tests/test_graphql.py
@@ -74,6 +74,12 @@ def test_graphql_invalid_field():
     }
 
 
+def test_graphiql_get():
+    response = client.get("/", headers={"accept": "text/html"})
+    assert response.status_code == 200
+    assert "<!DOCTYPE html>" in response.text
+
+
 class ASyncQuery(graphene.ObjectType):
     hello = graphene.String(name=graphene.String(default_value="stranger"))
 
