A passage barrier, comprising - a first guide element and - a second guide element (2b, wherein o the first guide element and the second guide element define an interlock region through which people pass from an entrance region into a passage region, - at least one barrier element (6a, 6b) that can prevent and/or enable the passage of a person from the entrance region into the passage region within the interlock region, - a drive, o wherein the drive has a drive unit and o wherein the drive has an output unit, • wherein the drive unit, the output unit and the barrier element (6a, 6b) are operatively connected in such manner that the barrier element (6a, 6b) is movable by means of the drive unit into a position closing the interlock region and into a position releasing the interlock region, characterized in that - at least one of the guide elements (2a, 2b) comprises a profile attachment element for attaching at least one profile of a guide element (2a, 2b) to the floor of a building structure, wherein - the profile attachment element has a vertical profile mount for receiving a vertically running profile on the profile attachment element and - the profile attachment element has a horizontal profile feedthrough for feeding a horizontally running profile through the profile attachment element. - a first guide element and - a second guide element (2b, wherein o the first guide element and the second guide element define an interlock region through which people pass from an entrance region into a passage region, o the first guide element and the second guide element define an interlock region through which people pass from an entrance region into a passage region, - at least one barrier element (6a, 6b) that can prevent and/or enable the passage of a person from the entrance region into the passage region within the interlock region, - a drive, o wherein the drive has a drive unit and o wherein the drive has an output unit, • wherein the drive unit, the output unit and the barrier element (6a, 6b) are operatively connected in such manner that the barrier element (6a, 6b) is movable by means of the drive unit into a position closing the interlock region and into a position releasing the interlock region, o wherein the drive has a drive unit and o wherein the drive has an output unit, • wherein the drive unit, the output unit and the barrier element (6a, 6b) are operatively connected in such manner that the barrier element (6a, 6b) is movable by means of the drive unit into a position closing the interlock region and into a position releasing the interlock region, • wherein the drive unit, the output unit and the barrier element (6a, 6b) are operatively connected in such manner that the barrier element (6a, 6b) is movable by means of the drive unit into a position closing the interlock region and into a position releasing the interlock region, - at least one of the guide elements (2a, 2b) comprises a profile attachment element for attaching at least one profile of a guide element (2a, 2b) to the floor of a building structure, wherein - the profile attachment element has a vertical profile mount for receiving a vertically running profile on the profile attachment element and - the profile attachment element has a horizontal profile feedthrough for feeding a horizontally running profile through the profile attachment element.