However, you could use descriptive terms to indicate age:
* Historic portico: This emphasizes the portico's historical significance.
* Antique portico: This suggests a very old portico, perhaps from an ancient structure.
* Classical portico: This refers to a portico designed in a classical style, which often implies an older structure.
* Victorian portico: This specifically identifies a portico from the Victorian era.
Ultimately, the best term depends on the context and what you want to emphasize about the portico's age.