The Jellyfish Lake, Lake Taal, Mt. Kinabalu, The Batu Caves and other cave systems, Samutprakarn (with the crocodiles), the Temple Of The Azure Cloud, multiple snake farms in SEA. My dream is seeing particularly the following: The electric blue coral snakes, the rat snakes, liphistiids and the kraits.
The Eisriesenwelt in Austria, the Hermann's cave in Germany with the infamous olm lake and the prehistoric skeleton exposition. As well as multiple other caves like in former Jugoslavia the Baredine cave. Then of course Italy with Florence & the Tuscany or the volcanoes/aeolic islands. Cocullo I would love to visit due to the snake rituals there with four-lined snakes. And in Northern Europe Spitzbergen/various aquariums. For Europe I have a multitude of ideas.
Africa I will despite my love for its fauna never visit, but I would love to see Boomslangs/twig snakes/mambas/file snakes/egg eaters/puff adders/etc. in the wild, the same as Welwitschia and Roridula, probably Namaqua land would be really based. The same reasoning with South/Central America: Too much human danger. To Britain/the USA I will never travel even if I could.
But realistically I want to see an European Ghost Orchis and the Violett Limodore at least once in my life in the wild. And if realism/legality/reason didn't play a role in it I would want to see to Queimada Grande.
America sucks to be honest, but I'd probably visit Northern California.
Abroad, probably Italy.
Italy is very good.
Recommend for the North Venice, the Lake Garda, most of Tirol. And the Tuscany is probably one of the finest places in the world.