Yes, most park benches can be directly anchored into concrete, and this is often the standard and most secure installation method. They typically do not require a separate, special base if you are installing them onto an existing concrete slab or footing. The key is using the correct hardware and technique.
For a permanent installation, you use concrete anchors. Common types include wedge anchors, sleeve anchors, or chemical anchors. The process involves drilling precise holes into the concrete using a hammer drill and a masonry bit, inserting the anchor, and then tightening the bolt that goes through the bench's pre-drilled mounting feet. This creates an incredibly strong, fixed connection that prevents theft and tipping.
However, the concrete itself must be sound, sufficiently thick (usually at least 4 inches), and poured over a compacted sub-base. If you are pouring new concrete specifically for the bench, you can often embed the bench's mounting bolts directly into the wet concrete, which is even more robust.
The alternative—a special freestanding base—is usually reserved for situations where you cannot drill into the ground, such as on a delicate patio or when temporary placement is needed. For permanent public installations on solid ground, anchoring directly into a concrete foundation is the professional norm. Always consult the bench manufacturer's instructions for their specific hardware recommendations and load requirements.