Jannah Paradise is the abode of peace.
It is already created [and] now [it exists]. Allah ta^ala said:
(وَسَارِعُواْ إِلَى مَغْفِرَةٍ مِّن رَّبِّكُمْ وَجَنَّةٍ عَرْضُهَا السَّمَوَاتُ وَالأَرْضُ أُعِدَّتْ لِلْمُتَّقِينَ)
The ayah means: Rush to forgiveness from Allah and Paradise whose width is the skies and earth that has been prepared for the pious (God-Fearing) ones (Al ^Imran 133). Paradise is going to last without an end. Allah ta^ala said: (وَمَن يُطِعِ اللهَ وَرَسُولَهُ يُدْخِلْهُ جَنَّاتٍ تَجْرِي مِن تَحْتِهَا الأَنْهَارُ خَالِدِينَ فِيهَا وَذَلِكَ الْفَوْزُ الْعَظِيمُ)
The ayah means: Those who obey Allah and his prophet, Allah admits them to Paradise under which rivers flow; they will stay living in it forever and this is the great success (an-Nisa’ 13). Most of its people are from the poor, the prophet, salla-l-lahu ^alayhi wa sallam, said: I had entered Paradise and saw that most of its people are poor. Allah prepared in it for his God-fearing slaves what no eye has ever seen, what no ear has ever heard of and what no human heart has ever thought of. The prophet, salla-l-lahu ^alayhi wa sallam, said: Allah said: I prepared for my God-fearing slaves what no eye has ever seen, what no ear has ever heard of and what no human heart has ever thought of (narrated by al-Bukhariyy).