The Lotus Temple is a Bahá'í House of Worship. This is their most recently completed building, which was finished 20 years ago. The Houses are open to people of all faiths, the gate keepers even explicitly tell you to feel free to pray to your chosen deities. Services focus on the worship of God, not a particular one, just God in general. To my complete suprise, they don't even collect money, in fact, only the Bahá'í are allowed to contribute.