Frankfurt’s beloved botanical gardens are home to 50 acres of tropical trees, orchids and ferns. The place is situated in the middle of the city. You can reach it easyly by bus or by feet.
It is the oldest botanic-garden in Europe. It is a must on a buckle list of Gießen.
When you are in town for other sights, you can have a break in the green and relax for a while.
Great Botanical Garden, right in the centre, being renovated currently, so it will get even better. The Darwin path is particularly attractive. The summer concerts are great.