And as strange as they are, they've got something in common with every other Corinthian column.

Something you have to look closer to see.

These are acanthus leaves.

Once you start looking for them, you'll notice them everywhere.

And these leaves?

They say something about why we have decorated columns in the first place.

Okay.

So there are different types, or orders, of columns you run into in classical architecture.

The most important stuff is at the top part, on what's called the “capital.”

The three big orders are Doric — think super basic.

Ionic: look for the swirly things, called volutes.

And Corinthian — that's where you want to look for the leaves.

Composite is similar, but with the volutes added in.

It's a little much.

Corinthian columns probably entered the mix around 550 BC, but through all these centuries of change, the ornamentation at the top stayed the same.

And those leaves?

They tell the columns' story.

There's a myth behind the acanthus's appearance on columns.

It comes from the Roman writer Vitruvius.

His legend was that a young girl died.

In mourning, her nurse put the girl's favorite stuff in a basket and set a tile on top of it.

But the basket was placed on top of an acanthus plant, which grew leaves that covered the entire weave.

A sculptor named Callimachus saw it, got inspired, and invented the Corinthian column.

Yeah, no … sure, Vitruvius.

That's what happened.

But the myth does speak to what made the acanthus enduring.

It could grow from root cuttings.

These leaves showed up on Greek columns, though many are now lost.

They popped up in Roman architecture as the empire grew.

Some say the Greek and Roman columns had different acanthus species, but stylization has erased most of that distinction.

All the Corinthian columns' versions reflected the strength of the acanthus.

Eventually, the design of Corinthian column became strong enough to support itself through history.

The acanthus wasn't a given.

This is the plan for the United States Capitol's hall of columns.

Along with acanthus, it includes tobacco leaves.

Around the world, columns draw on different ancient references, but in the West, referencing classical ornamentation largely means following the same template.

Often there's creativity, as in this column capital at Chartres, but almost always, acanthus is in the mix.

These leaves don't just symbolize the strength of a plant.

They've come to represent the endurance of a culture's design.

The Capitol building's current columns still feature ornate acanthus leaves.

These columns were removed from the Capitol.

But acanthus leaves?

They may never be replaced.

So Vitruvius's real interest in these columns was probably more in the proportions than in the leaves.

That makes sense when you know that he is the person who was behind the Vitruvian man.

This guy.

It feels like I'm dancing now.