Generally it is done by trust or administration which include the rich people of communtiy but in religious way it is done by pandit ji (priest) of temple
That question usually comes from how we define “biggest,” because it can mean different things like area, height, structure size, or temple complex. Akshardham is actually one of the largest and most grand Hindu temple complexes in the world in terms of design, architecture, and campus scale, but it may not always be called the “biggest” because there are older temple complexes and pilgrimage sites that cover much larger overall land areas. For example, some traditional temple towns and ancient temple complexes in India have grown over centuries and include multiple shrines, halls, and surrounding sacred spaces, making their total size larger in a different sense. Also, Akshardham is relatively modern compared to many ancient temples, so comparisons are often based on historical, cultural, or pilgrimage importance rather than just physical dimensions. So it’s not really that Akshardham isn’t big, it’s actually massive and architecturally remarkable, but the title of “biggest” depends on what criteria people are using to measure a temple.
Vraj Hindu Temple was created in 1988.
Please resubmit your question giving more detail for example what type of temple.
St. John's Hindu Temple was created in 1975.
I think the 1st hindu temple was built between 1500BC-600BC.
The dwarka temple i think
No
I suppose the Dwarka Temple.
The prayers at a Hindu temple can be lead by a person appointed by the temple management committee or a hereditary priest.
In the centre of a Hindu Temple there is a idol of God. Sometimes this idol is not found in the centre of the main temple rather underground in a dark chamber.
The Hindus pray in temples. A Hindu Temple
In a Hindu temple, one should always pray to lord Ganesha first.