Final answer:
Site-specific theatre uses non-theatrical spaces like parks for performances, maintaining original architectural elements, while traditional proscenium theatre, including Broadway and venues like the National Theatre or Lincoln Center, is specially designed for theatre.
Step-by-step explanation:
Site-specific theatre or environmental theatre involves using unusual spaces that were originally designed for non-theatrical purposes and adapting them for performances.
These environments maintain their original architectural elements and are modified for the audience and actors. For example, parks are often used for 'Shakespeare in the Park' festivals, where the natural space is turned into an open-air theatre.
The traditional proscenium theatre, on the other hand, is a space designed specifically for theatrical performances with a clear separation between the audience and the stage. This type of theatre includes various forms such as the Italian-style theatre, which is known for its ornate and opulent design, and can be seen in most Broadway theatres and venues like the National Theatre in London or the Lincoln Center in New York.