landmark

/ˈlændˌmɑrk/

the position of a prominent or well-known object in a particular landscape

中文释义：地标；里程碑

The Eiffel Tower is one of the most famous landmarks in the world.

埃菲尔铁塔是世界上最著名的地标之一。

The discovery of penicillin was a landmark in medical history.

青霉素的发现是医学史上的一个里程碑。