This highly-detailed Victor Molev puzzle Tale of the Lost City features an Escheres-que medieval city scene. It will be 252 pieces, and it will be quite hard!
Here's a close-up to show you the fun detailed artwork:
Jef Bambas has celebrated the image with simple hexagonal pieces and non-unique hexagonal connectors that put the image detail front and center. There are hardly any whimsies. Here's a sneak peek.