The GR21 is a long-distance hiking trail in Normandy

Normandy

Normandy is a geographical region corresponding to the former Duchy of Normandy. It is in France.The continental territory covers 30,627 km² and forms the preponderant part of Normandy and roughly 5% of the territory of France. It is divided for administrative purposes into two régions:...

, France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

. It is part of the GR network of trails. It begins at the port city of Le Havre

Le Havre

Le Havre is a city in the Seine-Maritime department of the Haute-Normandie region in France. It is situated in north-western France, on the right bank of the mouth of the river Seine on the English Channel. Le Havre is the most populous commune in the Haute-Normandie region, although the total...

, a Unesco

UNESCO

The United Nations Educational, Scientific and Cultural Organization is a specialized agency of the United Nations...

 World Heritage Site

World Heritage Site

A UNESCO World Heritage Site is a place that is listed by the UNESCO as of special cultural or physical significance...

 (for its post-World War II modernist architecture), climbs through parkland to Montivilliers

Montivilliers

Montivilliers is a commune in the Seine-Maritime department in the Haute-Normandie region in northern France.-Geography:A large light industrial and farming town by the banks of the river Lézarde in the Pays de Caux, situated just north of Le Havre, at the junction of the D489, D52, D926 and D31...

, then follows the chalk

Chalk

Chalk is a soft, white, porous sedimentary rock, a form of limestone composed of the mineral calcite. Calcite is calcium carbonate or CaCO3. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite plates shed from micro-organisms called coccolithophores....

 cliffs of the Pays de Caux

Pays de Caux

The Pays de Caux is an area in Normandy occupying the greater part of the French département of Seine Maritime in Haute-Normandie. It is a chalk plateau to the north of the Seine Estuary and extending to the cliffs on the English Channel coast - its coastline is known as the Côte d'Albâtre...

 for most of the route. Étretat

Étretat

Étretat is a commune in the Seine-Maritime department in the Haute-Normandie region in northern France. It is a tourist and farming town situated c. 32 km northeast of Le Havre, at the junction of the D940, D11 and D139 roads. It's located on the coast of the Pays de Caux area.-The...

 is known for its chalk formations, painted by Claude Monet

Claude Monet

Claude Monet was a founder of French impressionist painting, and the most consistent and prolific practitioner of the movement's philosophy of expressing one's perceptions before nature, especially as applied to plein-air landscape painting. . Retrieved 6 January 2007...

 and other artists. It passes through various seaside resorts and fishing villages, including the port of Dieppe

Dieppe, Seine-Maritime

Dieppe is a commune in the Seine-Maritime department in France. In 1999, the population of the whole Dieppe urban area was 81,419.A port on the English Channel, famous for its scallops, and with a regular ferry service from the Gare Maritime to Newhaven in England, Dieppe also has a popular pebbled...

 and finishes at the resort of Le Tréport

Le Tréport

Le Tréport is a commune in the Seine-Maritime department in the Haute-Normandie region in northern France.-Geography:A small fishing port and light industrial town situated in the Pays de Caux, some northeast of Dieppe at the junction of the D940, the D78 and the D1015 roads...

, close to the historic town of Eu

Eu, Seine-Maritime

Eu is a commune in the Seine-Maritime department in the Haute-Normandie region in northern France.Eu is located near the coast in the eastern part of the department, near the border with Picardie.Its inhabitants are known as the Eudois.-Geography:...

. The whole route is within the Seine-Maritime

Seine-Maritime

Seine-Maritime is a French department in the Haute-Normandie region in northern France. It is situated on the northern coast of France, at the mouth of the Seine, and includes the cities of Rouen and Le Havre...

département.