Revelation 21:1-3 KJV And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea.  And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband.  And I heard a great voice out of heaven saying, Behold, the tabernacle of God is with men, and he will dwell with them, and they shall be his people, and God himself shall be with them, and be their God.
Revelation 21:10-17 KJV
 And he carried me away in the spirit to a great and high mountain, and shewed me that great city, the holy Jerusalem, descending out of heaven from God,  Having the glory of God: and her light was like unto a stone most precious, even like a jasper stone, clear as crystal;  And had a wall great and high, and had twelve gates, and at the gates twelve angels, and names written thereon, which are the names of the twelve tribes of the children of Israel:  On the east three gates; on the north three gates; on the south three gates; and on the west three gates.  And the wall of the city had twelve foundations, and in them the names of the twelve apostles of the Lamb.  And he that talked with me had a golden reed to measure the city, and the gates thereof, and the wall thereof.  And the city lieth foursquare, and the length is as large as the breadth: and he measured the city with the reed, twelve thousand furlongs. The length and the breadth and the height of it are equal.  And he measured the wall thereof, an hundred and forty and four cubits, according to the measure of a man, that is, of the angel.
That is basically a little farther than Birmingham ,Alabama to Phoenix ,Az.
If you divided up the city in mile cubed rooms that would be 33,75,000,000 rooms!
If you spent 1 minute in each room it would take you 2,343,750 days or 6421 years 232 days or 91.7 lifetimes to view the whole city.
1 Corinthians 2:9 KJV
 But as it is written, Eye hath not seen, nor ear heard, neither have entered into the heart of man, the things which God hath prepared for them that love him.
Don’t you want to go there!