As the Pokémon Go craze hit the nation's capital this weekend, park rangers began to realize that it could be an opportunity.
The Washington Monument itself is a trainer gym in Pokémon Go, leading many folks to come to the spot just to play the game.
Seriously, there are Pokémon everywhere around the Washington Monument.
Which is where Ollig got the idea of rangers going around playing Pokémon Go with visitors.
"By talking about it, and actually participating in this with people, it enables us to help guide the experience — so it’s not just somebody out here at the Washington Monument catching a Zubat, it is a ranger walking around with somebody, talking about the Washington Monument," he said.
In the course of the short walk from the Washington Monument to the garden, Ollig and another park ranger, Zach Whitlow, ran into several people playing Pokémon Go.
Tyler and Kim told Ollig they came down from West Howard County in Maryland to the National Mall to look for Pokémon "until it's too hot, pretty much."