Valmiki Ramayana Yuddha Kanda Sarga 39 Shloka 22

प्रासादैश्च even the buildings, विमानैश्च resembled air planes, परमभूषिता decorated beautifully, लङ्का Lanka, आतपापापये exposed to the sun, घनैः rainy clouds, मध्यमम् in the centre, वैष्णवंपदम् इव resembling the abode of Vishnu.

The tall buildings decorated beautifully resembled air planes and were shining like heavy rainy clouds exposed to the sun. The building in the centre resembled the abode of Vishnu.