The House of ALLAH in Makkah.
The Kaaba is a cuboidal building located inside the al-Masjid al-Haram mosque in Mecca, Saudi Arabia. The mosque was built around the original Kaaba.
The Kaaba is the holiest place in Islam. The qibla, the direction Muslims face during prayer, is the direction from their location on Earth towards the Kaaba. It is around the Kaaba that ritual circumambulation is performed by Muslims during the Hajj (pilgrimage) season as well as during the Umrah (lesser pilgrimage).