Castle and streets made of gold in heaven. God's throne in center.

Heaven’s streets of gold are often referenced in song and poetry, but they’re harder to find in the Bible. In fact, there is only one passage of Scripture that mentions streets of gold, and that refers to the Holy City, the New Jerusalem: “The great street of the city was of gold, as pure as transparent glass” (Revelation 21:21). Earlier, John had described the whole city as being “of pure gold, as pure as glass” (verse 18). Do these verses tell us that the streets (and the city) will be literally made of gold in heaven? If so, what is the significance of having literal streets of gold?

https://www.gotquestions.org/streets-of-gold.html ↗️