Great Domes of Qo'noS

The Great Domes of Qo'noS, were a landmark on the Klingon homeworld Qo'noS in the Alpha Quadrant.

Worf's visit
In 2372, Starfleet officer Commander Worf, son of Mogh, then stationed at Deep Space 9 mentioned to Lieutenant commander Jadzia Dax visiting the Great Domes of Qo'noS in 2355, when his foster parents arranged for him to stay at his cousins on the Klingon home world. Upon gazing at them, he stated that he felt that he had finally came home.

Kor's dream
Kor also referenced the Great Domes in a dream that he described to Jadzia Dax; He dreamt the three of them, Worf, Daz and Kor, were in the Hall of Heroes presenting the Bat'leth of Kahless to the Klingon Emperor and as they stood near the statues of Kang and Koloth as the crowd sang their names, the statues came to life. Kang and Koloth were flesh and blood again as they held the sword high, the crowd's song was so vibrant and thunderous that it ripped open the great dome and the heavens poured in their light...