The correct answer is A. Shiva temple.
Haleshwar Asthan is a Hindu temple dedicated to the god Shiva. It is located in the town of Sitamarhi in the Indian state of Bihar. The temple is believed to have been built in the 12th century by the Chandela dynasty. It is one of the most important pilgrimage sites for Hindus in Bihar.
The temple is a complex of several buildings, including the main temple, a number of smaller temples, and a tank. The main temple is a square structure with a pyramidal roof. It is made of sandstone and decorated with intricate carvings. The inner sanctum of the temple houses a lingam, a phallic symbol of Shiva.
The temple is open to the public all year round. However, the most auspicious time to visit the temple is during the month of Shravan, when Hindus celebrate the festival of Maha Shivratri.
The other options are incorrect because:
- Option B is incorrect because Haleshwar Asthan is not a Vishnu temple.
- Option C is incorrect because Haleshwar Asthan is not a Brahma temple.
- Option D is incorrect because Haleshwar Asthan is not a Sita temple.