The Natural History Museum in London is set to host a Pokémon pop-up shop later this month, an event that has already proved popular enough to sell out timed entry slots well ahead of its opening.

According to Time Out London, the pop-up will run from January 26 through April 19 inside the museum’s Cranborne Boutique, following an extension prompted by demand. 

The collaboration, themed “Pokécology: An Illustrated Guide to Pokémon Ecology,” includes exclusive merchandise designed around the overlap between the Pokémon universe and the museum’s scientific collections, including apparel, stationery, enamel pin sets, art prints, and an oversized “Pikachu at the Museum” collector card distributed with purchases.