Britain made a lot of mistakes when it comes to Egypt, and not just with Suez. Almost as soon as “explorers” could break into ancient tombs, they would lose track of thousands of things they discovered or leave poor information about how they found it. Since the 1800s, University College London has worked to properly collect, identify, and date more than 80,000 artifacts; roaming its treasure-crammed cases, some of which are stocked with items that still stump scholars, can be awe-inspiring. From the cotton Tarkhan dress last worn 5,000 years ago to Roman funerary portraits painted in beeswax, the things one finds in these stacks could blow a mind.