The Kaaba, sometimes referred to as al-Ka'ba al-Musharrafa, is a stone building at the center of Islam's most important mosque and holiest site, the Masjid al-Haram in Mecca, Saudi Arabia. It is considered by Muslims to be the Baytullah and is the qibla for Muslims around the world. The current structure was built after the original building was damaged by fire during the siege of Mecca by Umayyads in 683 CE.
In early Islam, Muslims faced in the general direction of Jerusalem as the qibla in their prayers before changing the direction to face the Kaaba, believed by Muslims to be a result of a Quranic verse revelation to Muhammad.
Wikipedia https://en.wikipedia.org/wiki/Kaaba
Coordinates 21°25'21.061" N 39°49'34.256" E