stela

Example:The obelisk in the center of the square is a symbol of this city's rich history.

Definition:a tall, pointed, four-sided monument, usually made of stone, often placed in pairs in front of temples, especially in ancient Egypt.

Example:The monolith in the park is a popular spot for visitors to take a picture.

Definition:a large piece of stone, or any large, massive, or slab-like structure used as a memorial or monument.