The N51 is a road

Road

A road is a thoroughfare, route, or way on land between two places, which typically has been paved or otherwise improved to allow travel by some conveyance, including a horse, cart, or motor vehicle. Roads consist of one, or sometimes two, roadways each with one or more lanes and also any...

 in Luxembourg City, in southern Luxembourg

Luxembourg

Luxembourg , officially the Grand Duchy of Luxembourg , is a landlocked country in western Europe, bordered by Belgium, France, and Germany. It has two principal regions: the Oesling in the North as part of the Ardennes massif, and the Gutland in the south...

. It is one of the city's main thoroughfare

Thoroughfare

A thoroughfare is a place of transportation intended to connect one location to another. Highways, roads, and trails are examples of thoroughfares used by a variety of general traffic. On land a thoroughfare may refer to anything from a rough trail to multi-lane highway with grade separated...

s, carrying traffic from Ville Haute

Ville Haute

Ville Haute is a quarter in central Luxembourg City, in southern Luxembourg.In 2001, the quarter had a population of 2,686 people.It is the historical center of Luxembourg City and is involved in its UNESCO World Heritage Site status....

, through Kirchberg

Kirchberg, Luxembourg

Kirchberg or the Kirchberg is a quarter in north-eastern Luxembourg City, in southern Luxembourg. It consists of a plateau situated to the north-east of the city centre, Ville Haute....

, to a junction with the A1

A1 road (Luxembourg)

The Autoroute 1, abbreviated to A1 or otherwise known as the Trier motorway , is a motorway in Luxembourg. It is long and connects Luxembourg City, in the south, to Wasserbillig, in the east...

. For the north-eastern three quarters of its length, on the eastern side of the Alzette

Alzette

The Alzette is a river with a length of 73 kilometers in France and Luxembourg. It is a right tributary of the Sauer.It rises in Thil near the town Villerupt in the Meurthe-et-Moselle département, France. It crosses the border with Luxembourg after a few kilometres. In Lameschmillen it is joined...

, it bears the name Avenue John Fitzgerald Kennedy. West of the Alzette, it is successively named Boulevard Robert Schuman (after Robert Schuman

Robert Schuman

Robert Schuman was a noted Luxembourgish-born French statesman. Schuman was a Christian Democrat and an independent political thinker and activist...

); Boulevard de la Foire; and Boulevard Grand-Duchesse Charlotte (after Grand Duchess Charlotte

Charlotte, Grand Duchess of Luxembourg

Charlotte, Grand Duchess of Luxembourg was the reigning Grand Duchess of Luxembourg from 1919 to 1964.-Early life and life as Grand Duchess:...

).

At its southern end, in south-western Ville Haute, the N51 meets the N4 at an intersection

Intersection (road)

An intersection is a road junction where two or more roads either meet or cross at grade . An intersection may be 3-way - a T junction or fork, 4-way - a crossroads, or 5-way or more...

. From here, it heads northwards, followed by northeastwards, skirting the western edge of Ville Haute. After bending almost a full right angle

Right angle

In geometry and trigonometry, a right angle is an angle that bisects the angle formed by two halves of a straight line. More precisely, if a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles...

, it crosses the Alzette river, being carried over Pfaffenthal by the Grand Duchess Charlotte Bridge

Grand Duchess Charlotte Bridge

The Grand Duchess Charlotte Bridge is a road bridge in Luxembourg City, in southern Luxembourg.It carries the N51 across the Alzette, connecting the Avenue John Fitzgerald Kennedy, in Kirchberg, to Boulevard Robert Schuman, in Limpertsberg...

. On the eastern side, it reaches Kirchberg, where it is known as Avenue John Fitzgerald Kennedy, named after United States President

President of the United States

The President of the United States of America is the head of state and head of government of the United States. The president leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces....

 John F. Kennedy

John F. Kennedy

John Fitzgerald "Jack" Kennedy , often referred to by his initials JFK, was the 35th President of the United States, serving from 1961 until his assassination in 1963....

. The road runs the length of Kirchberg, forming its most important arterial road. It passes several large buildings in Kirchberg, including the Robert Schuman Building, the Philharmonie Luxembourg

Philharmonie Luxembourg

The Grande-Duchesse Joséphine-Charlotte Concert Hall is a concert hall located on the Kirchberg plateau in the City of Luxembourg. Opened in 2005, it now plays host to 400 performances each year and is one of the main concert halls in Europe.-Origins:...

, d'Coque

D'Coque

The National Sporting and Cultural Centre , better known as d'Coque, is an indoor arena in Kirchberg, a quarter of Luxembourg City, in southern Luxembourg....

 arena, and the Utopolis Kirchberg

Utopolis Kirchberg

The Utopolis Kirchberg is a multiplex cinema in Luxembourg City, in southern Luxembourg, owned and operated by the Utopia Group. It is located on the Avenue John Fitzgerald Kennedy in the Kirchberg quarter, in the north-east of the city...

cinema. Near the city limits, the N51 meets the A1, which carries traffic eastwards, towards Germany.