A rail for a railing system with pickets comprises an elongated cover portion and an elongated side portion. The cover portion comprises an elongated top surface, one or more first connectors proximate to a lateral end of the top surface, a plurality of shelves interspersed between successive ones of the pickets, and one or more second connectors. Each of the shelves comprises a first end, and each of the second connectors extends from at least some of the first ends. The elongated side portion comprises one or more third connectors and one or more fourth connectors. The third connectors are adapted to engage with the one or more first connectors, and the fourth connectors are adapted to engage with the one or more second connectors. The side portion is secured to the cover portion by engagement of the third connectors with the first connectors and by engagement of the fourth connectors with the second connectors.