Which neoclassical building in Berlin, modeled on the Propylaea, is a famous city gate?

The neoclassical building in Berlin, modeled on the Propylaea, is the Brandenburg Gate.

Built between 1788 and 1791 for King Frederick William II of Prussia, the gate was designed by Carl Gotthard Langhans. Its form echoes the Propylaea, the monumental gateway to Athens’ Acropolis, giving Berlin a deliberately classical architectural statement. The gate originally marked the beginning of the road toward Brandenburg an der Havel.

Twelve fluted Doric columns create five passageways, while a bronze quadriga—Victory driving a four-horse chariot—crowns the structure. The sculpture was made by Johann Gottfried Schadow. The gate was first associated with peace, but later became a setting for military ceremonies and political symbolism.

A common mix-up is treating it as a triumphal arch. Although it resembles one, it was built as a city gate. During the Cold War, the Berlin Wall stood directly beside it, turning the monument into a symbol of division. After the Wall fell in 1989 and Germany reunified, it came to represent European unity and peace.