The Bow River Trail is a riverside trail of 0.9 or 1.4 km, which are paved and according to the home page of the Town of Banff even wheelchair accessible.
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Facilities include a climbing wall, spin studio, aquatics centre (25-m pool with view of Sulphur Mountain, hot tub, whirlpool, wading pool, steam room, and sun deck), massage, physiotherapy, drop-in classes (e.g. spin, yoga, zumba) and more.
A globally respected arts and cultural centre featuring performances and events with dance, music, theatre, opera, film, books, new media, and visual arts.
You can see the Fairmont Banff Springs Hotel, Bow River, and Sulphur Mountain from this viewpoint on the lower slopes of Tunnel Mountain.
Below the iconic Banff Springs Hotel is the beautiful Bow Falls. It's not the most dramatic waterfall in Banff National Park, but Bow Falls is in the town of Banff and is worth a visit. Easily accessible with plenty of parking for private vehicles and tour buses. You can take in the view from either side of the river.
A popular walk to the hoodoos (a kind of rock formations) east of Banff.
A hike of 4.3 km, ranked as "easy". It starts from downtown Banff and takes you up the Tunnel Mountain, from where you have a nice view over the surroundings. You won't find any tunnel along the trail; when the Canadian Pacific railway was constructed in the late 19th century a plan was to build a tunnel through this mountain but it never happened.