Ruins

Named after a 6th-century saint, who was also a scholar.

At more than 5,000 years old, these structures are among the oldest free-standing stone buildings in the world.

Now in ruins, this castle stood for centuries and saw a number of gruesome events.

This 20th-century replica of a 13th-century castle has itself fallen into ruin.

The ruins of a military outpost from the 1860s form the centerpiece of a Nevada state park.

The father of Belfast medicine is buried in the graveyard of this 13th-century church, which now lies in ruins.

Underneath the historic center of Mexico City, the remains of a temple dedicated to the Aztec god of the wind.

Now in ruins, this abbey was the home of Tironensian monks for more than 400 years.

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

A 13th-century stronghold that has fallen into ruin.

Nine hundred years ago, this was the home of a feudal lord. Today all that remains is a steep mound surrounded by a deep moat.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

These ruins of an octagonal stone school that was later used as an A.U.M.P. church exemplify a popular school design from the 1830s.

Hidden behind a YMCA stands the remains of a ceremonial site that dates back hundreds of years, whose ground is still considered sacred to many Hawaiians.