Walking meditation is a tremendously beneficial practice that allows you to become more present with every step you take. Whenever and wherever you walk, you can practice mindful walking.
The above Introduction to Walking Meditation guides you through simple, step-by-step instructions to introduce you to the practice's basics.
If possible, find an environment that feels good to you. A safe, peaceful, natural environment is an excellent place to start. That said, most settings can work. Listening to the guided meditation with headphones may also be helpful.