Intricate Topiaries are structures exclusive to the Hamlet DLC, spawning naturally in the Pig Citybiome. There are 4 different topiaries, each of which may spawn with their own "build" of surrounding structures (as a Set Piece would).
The Intricate Topiaries can be destroyed with a hammer, however they do not get fully removed. They can be repaired again by the player using a hammer, or by a nearby worker Pig.
To fully remove the Intricate Topiary, one must obtain the Executive Hammer from the Palace. There is currently no way to reconstruct the Intricate Topiaries.