Hi, I saw these around Mexico City and fell in love! The leaves stick straight up and are kept trimmed, not sure if they flower or not.

Thanks in advance!

Hi camillej,

I'm thinking they might be a variety of Yucca with the tips pruned off due to the dangeroius, sharp points. We have lots of different Yucca's listed in the database: https://garden.org/plants/brow...

Hopefully someone will be along shortly and recognize the plants to give you a more exact ID.

The ones in back are New Zealand Flax (Phormium tenax)..

That's pretty intensive pruning to cut each tip into a point.. Most have more of an arching growth... but really, they need more room than that.. Pruning that hard is a crime to me. It's just not the best plant for that application.
If you want something that gives that vertical effect, and have a *contained* space (It runs), a real architectural plant that looks especially good with modern architecture is Equisetum hymenale.. I think it would serve you better for that type of look than the NZ Flax... which wants to be 6' around...

Phormium, sadly butchered Phormium.