As any aircraft approaches the speed of sound (1100 ft/s, 343 m/s), the air pressure builds up in front of the aircraft, forming a "wall" of air. To punch through that wall of air, planes must be streamlined. To streamline the Concorde, the following designs have been implented:

Needle-like fuselage
Swept-back delta wing
Moveable nose
Vertical tail design

The fuselage (body) of the Concorde is only 9.5 ft (2.7 m) wide (for comparison, a 747 is 20 ft (6.1 m) wide). The length of the Concorde is about 202 ft (61.7 m), just slightly shorter than a 747. The long, narrow shape of the Concorde reduces the drag on the plane as it moves through the air.

Photo courtesy British Airways
Drawing of the Concorde in flight: Note the wide, triangular wing structure and lack of horizontal tail.

Photo courtesy British Airways
A Boeing 747 in flight: Note the thin, rectangular wing structure and horizontal stabilizer on the tail.

The wing of the Concorde is thin, swept back and triangular, whereas a 747's wing is swept back but rectangular. Also, there is no space between the fuselage and the wing of the Concorde as there is in the 747. The Concorde's wing is called a delta-wing design and does the following:

Reduces drag by being thin and swept back (55 degrees with the fuselage)
Provides sufficient lift for takeoff and landing at subsonic speeds
Provides stability in flight so that no horizontal stabilizers are needed on the tail

The Concorde has a longer, needle-shaped nose compared to most commercial jets. The nose helps penetrate the air, and can be tilted down upon takeoff and landing (13 degrees) so that the pilots can see the runway. (Delta-winged aircraft have a steeper angle of attack during takeoff and landing than other types of aircraft.) Also, the Concorde's nose has a visor to protect the windshield when flying at supersonic speeds.

As mentioned above, because the delta wing provides stability to the aircraft, the Concorde does not require a horizontal stabilizer on the tail like most other aircraft.

These designs in the body and wings of the aircraft allow it to move easily through the air at high speed.