A foldable tent comprising a roof having: • a tent canvas; • a first mastless umbrella structure including a first upper hub, a first lower hub, a plurality of ribs (21, 22, 23, 24, 25) connected in a hinged manner to the first upper hub and cooperating with the tent canvas, a plurality of counter-ribs (26, 27, 28, 29, 30), each counter-rib of the first umbrella structure having a first end part connected in a hinged manner to one of the ribs of said first umbrella structure and a second end part connected in a hinged manner to the first lower hub, the ribs and counter-ribs of the first umbrella structure being arranged such that the first lower hub is movable relative to the first upper hub along a first direction of movement, said first umbrella structure being able to assume an open position and a closed position; • a second mastless umbrella structure including a second upper hub, a second lower hub, a plurality of ribs (21', 22', 23', 24', 25') connected in a hinged manner to the second upper hub and cooperating with the tent canvas, a plurality of counter-ribs (26', 27', 28', 29', 30'), each counter-rib of the second umbrella structure having a first end part connected in a hinged manner to one of the ribs of said second umbrella structure and a second end part connected in a hinged manner to the second lower hub, the ribs and counter-ribs of the second umbrella structure being arranged such that the second lower hub is movable relative to the second upper hub along a second direction of movement, said second umbrella structure being able to assume an open position and a closed position; and • at least a first junction configured to connect in a hinged manner the distal end of a first rib of the first umbrella structure and the distal end (21'a) of a first rib of the second umbrella structure, the tent being able to assume a deployed position in which the first and second umbrella structures are in the open position and a folded position in which the first and second umbrella structures are in the closed position. • a tent canvas; • a first mastless umbrella structure including a first upper hub, a first lower hub, a plurality of ribs (21, 22, 23, 24, 25) connected in a hinged manner to the first upper hub and cooperating with the tent canvas, a plurality of counter-ribs (26, 27, 28, 29, 30), each counter-rib of the first umbrella structure having a first end part connected in a hinged manner to one of the ribs of said first umbrella structure and a second end part connected in a hinged manner to the first lower hub, the ribs and counter-ribs of the first umbrella structure being arranged such that the first lower hub is movable relative to the first upper hub along a first direction of movement, said first umbrella structure being able to assume an open position and a closed position; • a second mastless umbrella structure including a second upper hub, a second lower hub, a plurality of ribs (21', 22', 23', 24', 25') connected in a hinged manner to the second upper hub and cooperating with the tent canvas, a plurality of counter-ribs (26', 27', 28', 29', 30'), each counter-rib of the second umbrella structure having a first end part connected in a hinged manner to one of the ribs of said second umbrella structure and a second end part connected in a hinged manner to the second lower hub, the ribs and counter-ribs of the second umbrella structure being arranged such that the second lower hub is movable relative to the second upper hub along a second direction of movement, said second umbrella structure being able to assume an open position and a closed position; and • at least a first junction configured to connect in a hinged manner the distal end of a first rib of the first umbrella structure and the distal end (21'a) of a first rib of the second umbrella structure,