The Hakurei Shrine (博麗神社 Hakurei Jinja) is a small, run-down Shinto shrine located on the Great Hakurei Barrier on the east side of Gensokyo. It's a key location that has appeared in many of the official games' prologues, stages, in character endings and in other official literature by ZUN. It's the home of the Touhou Project's protagonist: Reimu Hakurei.
The shrine has become a popular hangout for all sorts of youkai who Reimu and company defeat in the course of the games. However, because of this, very few (normal) humans come to the shrine, and even fewer (if any at all) leave donations, but because it is a place where human faith gathers, Aunn Komano tends guard the place without being asked.
The Hakurei Shrine was once the only shrine in Gensokyo, but the Moriya Shrine has since settled on the Youkai Mountain. Also adding to religious competition is the Myouren Temple and the Hall of Dreams' Great Mausoleum; the former is a Buddhist temple led by Byakuren Hijiri and the latter is held by Taoists run by Toyosatomimi no Miko.
From Wild and Horned Hermit chapter 8, it's known that there is money scattered around the shrine. Although the ones found by Reimu may have been planted there by the Unnamed Kuda-gitsune. It's later seen that like all shrines, the Hakurei Shrine offers omamori. Although with the Hakurei Shrine's god in question, it's unknown if the omamori would even provide anyone with divine power.