The largest city on Denmark's largest island, Jutland, Aarhus is the best place from which to seek out all corners of Denmark due to its central location. Surrounded by beech forest, with instant access to the coast and within a day trip of any part of the country worth seeing, Aarhus is an adventure in waiting.
Aarhus is a city best explored by tour bus. Ha! Just kidding! Aarhus is one of those cool places that have free bike rental kiosks everywhere and an easily navigable downtown where most sights you'll want to see are within a quick ride of each other. Sunbeams Over Aarhus is an interesting, color-coded network of trails that intertwine the best of natural Aarhus with the city's museums and landmarks; check the routes here. Then again, why not bike up to Mølle Park, where you can kick back and relax like a boss or toss the Frisbee around in plenty of open greenery. There are three other large and approximate city parks: Universitetsparken, which is home to two lakes near the university; the Botanical Gardens next to the famous open-air museum, Den Gamle By, which are especially worth a stroll in the springtime; and Mindeparken, which surrounds Marselisborg Palace to the south of the city and is also located right next to Moesgaard Forest.
During the (seemingly too short) summer, you'll want to enjoy the water and sand nearby. Head to well-regulated areas like Ajstrup Strand (blue-flag) to the south or Akrogen Beach to the north, stroll from the beech woods of Moesgaard to the stretch of beach that bears the same name, or make the day trip a few hours to the west coast where Hvide Sande calls out to kitesurfers the world over.
Don't just sit around with your toes in the surf, though, you're in Aarhus to embark! That's why proximity to Mols Bjerge, the Wadden Sea (and northern Germany), and an ascent of Himmelbjerget make it a great center of adventure affairs. Mols Bjerge and Wadden Sea are both national parks, but they differ immensely. Both touch the sea, but the former is a succession of sweeping hills and beech forest, while the latter may need a good pair of boots to wade through its marshy migratory grounds. Then again, Himmelbjerget, despite being a comparatively diminutive mountain at 147 meters, is the highest you'll find in Denmark, providing village and forest views after a moderate stretch of footing it.
Sure, there aren't extremes like the snowy, thin-aired Himalayas or the timeless beaches of the Caribbean, but you'll find that tempering your expectations can actually lead to a more well-rounded enjoyment of places that you never would have looked at twice before. Aarhus may very well be one of those places.