Court tennis (also known as real tennis) is the original racquet sport from which the modern game of lawn tennis is descended. A court tennis court is enclosed by walls on all four sides, three of which have sloping roofs, known as “penthouses.” Beneath these are openings (“galleries”) from which spectators can watch the game.
The cork-based balls are heavier than lawn tennis balls and much less bouncy. Racquets are shorter, made of wood and very tight nylon strings. Rules are more complex than the modern game.