Sangameswara Temple was originally situated near the Kudavelli village at the confluence of Krishna and Tungabhadra rivers. As Kudavelli was coming under submergence area due to Srisailam Hydro Electric Project the temple was transplanted to Alampur 20 kms south west of Kudavelli. This sandstone temple faces east and measures 68 x 41 ft.
Sangameshwara Swamy Temple is located near Muchumarri at the confluence of the Krishna and Bhavanasi rivers, in the foreshore of the Srisailam reservoir, where it is submerged for part of the time, surfacing when the water level recedes to a sufficient degree. It was first submerged after the Srisailam Dam was constructed in 1981, and first surfaced in 2003 and now in 2013.
It is a sandhara temple comprising a gudha mandapa, an antarala, and garbhagriha with ambulatory. The gudha mandapa entrance doorway features Ganga Yamuna at the base while firures of Sanghanidi, Padmanidi flanked the door way. The gudha mandapa consist of four rows of four pillars each and are mostly decorated with full blown lotus. The antarala doorway has four sakas decorated with patra latha, pushpa, stambha and rupa with Ganga and Yamuna a mithuna at the base. A garudha adorned the lalatabhimba.
The garbhagriha has a short square linga pita. The external wall faces on all the four sides are highly ornate with nine niches (Khattakas) five on the western side and four on the eastern side. The niches are broad and the nich pediments display a variety of toranas like makara torana and hamsa torana, sala and chitra toranas. The niches carry Siva’s various forms, Sankhanidhi, Padhmanidi, Ganga, Yamuna etc. The sikhara is of dvianga class and distinguished by karna amalaka sila capped by kalasa stupi of stone.
The temple is enclosed by a prakara wall of 4.00 mtr high and is unique in having the sculptural scene of elevational mouldings. It consis of an adhistana like that of a main shrine decorated with boldly carved relief panels inside niches framed by pilasters. The sculptured panels depicts Didhyadaras, Ghandarvas, Dikpalas, Ganas playing on musical instruments. The hara of kuta, sala, panjara models seen over this prakara has further accentuated an external elevational grandeur of the temple.
A sopana of 8 steps at the central axis of the prakara on the eastern side of the prakara connects to a nandi pavilion. On the basis of the label inscription found in the temple – probably a sthapathi guild of pre-Pulakesin-II undoubtedly make this temple anterior of all the Chalukyan temples at Alampur.
The temple’s wooden Lingam, Sangameswaram, is believed to have been installed by Dharmaraja, the eldest of the Pandavas, after their visit to Srisailam Mallikarjuna temple. The temple is considered a place of religious sanctity due to being built at the confluence of seven rivers (Bhavanasi, Krishna River and its five rivers that merge into it namely, Veni, Tunga, Bhadra, Bheemarathi and Malapaharini).