Several years ago I became aware of Yucca plants. Once aware of them, I started noticing them everywhere.
These have heavy spiked leaves at the bottom, and once a year send up a spectacular bloom stalk. Despite being a cactus-type plant, they survive the winters here if left outdoors.
The yucca shown above is on Spruce Street, but the blooms have now fallen off. The bloom stalk was about 7′ tall: