Architect Secretly Builds Epic Scavenger Hunt into NYC Apartment

Man, I can't complain too much, my mom, now an architect and always handy with tools used to build for me and my sisters climbing equipment outdoors and indoors. Notably we had several incarnations of an indoor TARDIS (a time traveling British "police box"), i.e. a giant poster of Dr. Who's TARDIS on the front of an indoor jungle gym. However we had nothing like this.