Final answer:
The original plans for Washington, D.C. had the President's House at one end of Pennsylvania Avenue and the Capitol Building at the other end, reflecting the city's design by Pierre L'Enfant to symbolize the connection between the executive and legislative branches of government.
Step-by-step explanation:
The question relates to the urban design of the capital city of the United States, specifically the planning of Washington, D.C. The President's House, now known as the White House, was originally planned to be at one end of Pennsylvania Avenue, with the other end being anchored by the Capitol Building, the seat of the United States Congress. This design was part of Pierre L'Enfant's plan for the city, which featured a series of grand boulevards and ceremonial spaces, inspired by the cities of Europe and aimed to symbolize the democratic ideals of the new nation. This configuration creates a symbolic and functional axis between the executive branch (the President's House) and the legislative branch (the Capitol Building).