The city was planned with the palace tower (Schloss) at the center and 32 streets radiating out from it like the spokes of a wheel, or the ribs of a folding fan, so that one nickname for Karlsruhe in German is the "fan city" (Fächerstadt). Because of this city layout, in metric geometry, Karlsruhe metric refers to a measure of distance that assumes travel is only possible along radial streets and along circular avenues around the centre.
The city centre is the oldest part of town and lies south of the palace in the quadrant defined by nine of the radial streets.
Panorama of Karlsruhe, looking south from the palace tower.
The Institute of Technology is on the left, the market square in the centre, the Federal Constitutional Court on the right.
In comparison, Karlsruhe features hot summers and average to mild winters.
The city is one of the warmest and sunniest in Germany.
Note wings of the palace aligning with streets, all radiating out from the centre of town, i.e., the palace tower.
Karlsruhe experiences an oceanic climate (Köppen climate classification Cfb) similar to much of Germany.The market square has the town hall (Rathaus) to the west, the main Lutheran church (Evangelische Stadtkirche) to the east, and the tomb of Margrave Charles III William in a pyramid in the buildings, resulting in Karlsruhe being one of only three large cities in Germany where buildings are laid out in the neoclassical style. Originally the area to the east of the palace consisted of gardens and forests, some of which remain, but the Karlsruhe Institute of Technology (founded in 1825), Wildparkstadion football stadium, and residential areas have been built there.The area west of the palace is now mostly residential.The central part of the palace runs east-west, with two wings, each at a 45° angle, directed southeast and southwest (i.e., parallel with the streets marking the boundaries of the quadrant defining the city center).The market square lies on the street running south from the palace to Ettlingen.Precipitation is almost evenly spread throughout the year.