Delsjön is a lake located six kilometers (three miles) east of the city center. The lake has a jetty, rocky shores, grassy slopes and a small sandy beach. If you do not feel like swimming, you can always hire a canoe. There are restrooms and a kiosk near the beach. For the younger children, there is also a small playground with swings. Take the number 5 tram to Töpelsgatan, and then enjoy a 15-minute walk through a nice forest.
One of Europe's largest and most alluring, the Gothenburg Botanical Garden stretches across 40 hectares (99 acres) of thematic enclaves and teeming greenhouses. This expertly choreographed landscape gives way to the wild appeal of the surrounding nature reserve and its winding trails. With over 16,000 species of plants on display, the botanical gardens are immensely diverse and beautifully composed to create lush, paradisical pockets of vegetation. Japanese landscape design intermingles with rock and herb gardens, while Europe's largest collection of tropical orchids bloom amid the greenhouses alongside a rare Easter Island tree that no longer exists in its original environment. The gardens also host an exciting array of exhibitions each year, as well as a year-round program of activities for visitors of all ages. A slice of Eden in Gothenburg, the Botanical Garden is akin to a landscape painted in vibrant hues and brought to life with a touch of magic.
Trädgårdsföreningen (the Garden Society) is located in the center of Gothenburg and was founded in 1842. The park features a rose garden, a palm house, a butterfly house and some lovely old architecture. The palm house has an exotic climate and tropical plants. It was constructed in 1878 as a replica of London's Crystal Palace. In the butterfly house, you can enjoy numerous species of butterflies flying around freely in their own habitat. If you get hungry the park has a few cafes and restaurants. The park also hosts special events such as theater, concerts and special gardening days.
The Skansen Krona fortress was built in 1641. The fortress' main purpose was to scare off the Danes, and it was also known as Juteskrämman (the Dane Scare). It was completed in 1695. Skansen Krona is built on a hill and therefore commands a grand view of the central parts of Gothenburg. The tower ornament is in the shape of a crown, hence the name (krona means crown). Today, the fort houses a military museum and is also used as a venue space for parties and weddings.