The longest fin­ger­nails in the world, glass­es to cor­rect stra­bis­mus, 60 cm high clogs to face the Venet­ian high tide, the flea trap. These are just some of the more than one hun­dred “gems” kept in a unique col­lec­tion of its kind. They are found only in the Muse­um of Curiosi­ties of San Mari­no on an area of 600 square meters. Extrav­a­gant inven­tions, unusu­al char­ac­ters and rare objects, a mix that can­not be found else­where.