By purchasing a condo (apartment) in a residential tower, you automatically become an owner in a vertical co-ownership. You can also be in a divided co-ownership, if you purchase a house (semi-detached or townhouse), built on the same lot than other individual homes. It is then called a horizontal co-ownership.
If this is the case, you may not be the sole owner of the land surrounding your home. You will therefore share with others the ownership of the private streets leading to the homes and common areas, and the common equipment such as the swimming pool and collective parking.