Are there economic journals which are keen to publish puzzling empirical observations? In his book &quot;Patterns of Speculation: A Study in Observational Econophysics&quot;(2002) Bertrand Roehner makes a bold assertion:

Physical journals welcome all kinds of experimental observations, especially if they are puzzling and cannot be explained by existing theories. Recent illustrations are the numerous papers about avalanches in sandpiles. Economic journals, on the contrary, are very reluctant to publish empirical observations, especially when they have no clear interpretation within the existing theoretical framework.
Another feature of great importance is the small volume of economic journals:
the total number of pages published annually in physical journals is probably of the order of 10–20 times larger than for economic journals. As a result the acceptance ratios for papers in economic journals are between 5 percent and 25 percent, which in turn induces authors to write on the most fashionable topics in the hope of raising the interest of referees, rather than to pursue an original and consistent research project.

Was he right? Has the situation changed since 2002?  Are there economic journals which are publishing puzzling empirical observations, i.e. those observations which have no clear interpretation within the existing theoretical framework?
Was he right? No.

Has the situation changed since 2002? Yes, there are lots more journals, and much higher diversity of publishing. Sadly, that also means there are also a lot more venues that publish at the bottom of the quality scale: one even shares a name with you.

Are there decent economic journals which are keen to publish puzzling empirical observations? No, generally they'll look for something well-written, novel, intelligent, and within the journal's scope. Just being a puzzling empirical observation simply isn't enough for any decent venue. You'll want a blog for that.

As for a slice of historical publishing of puzzling empirical observations, why not try a Google Scholar search for "productivity puzzle"?