Pointe de Almadies

The Cape of Good Hope is not quite as low as you can go on the African continent, but it's still geographically significant.

This lesser-known geographic marker was the reference point for all surveys of the continent for 75 years.

This small monument marks the divide between the Atlantic and Indian Oceans at the southernmost tip of Africa.

A pair of 19th-century granite markers symbolically record where the state boundaries of New York, New Jersey, and Pennsylvania intersect.

A quirky monument to the 49th parallel in downtown Prešov, Slovakia.

The most easterly point on mainland Australia offers dramatic ocean views.

This metal monument marking the middle of Belgium represents three regions coming together to form one country.

This unassuming stone bollard is a centuries-old marker denoting the center of the city.