Hanover's magnificent royal gardens, Herrenhausen Gardens (Herrenhäuser Gärten), encompass the Welfengarten and Georgengarten, two beautiful English-style parks, and the Berggarten, a botanic garden featuring orchid, palm, and cactus houses. 

It's also here you'll find the Grosser Garten (Great Garden), dating from 1666 and the best-preserved example of an Early Baroque garden in Germany with cascades, fountains, an orangery, and a garden theater. 

At the north end of Herrenhausen stands the Mausoleum built in 1846 for King Ernest Augustus and Queen Friederike, and which contains the tomb of George I of Britain. Also of note is the recently rebuilt Herrenhausen Palace.