The Czech Republic has many beautiful botanical places worth visiting. Here are some of the most well-known ones:

1. Botanical Garden of the Charles University in Prague - This garden is one of the oldest botanical gardens in Europe and features more than 20,000 plant species from all over the world.

2. Lednice-Valtice Cultural Landscape - This UNESCO World Heritage Site is a vast landscape with several parks, chateaux, and gardens, including the romantic English park, the French garden, and the Temple of Apollo.

3. Průhonice Park - This park is located near Prague and features over 1,600 species of plants, including a vast collection of rhododendrons, azaleas, and magnolias.

4. The Arboretum of the Silva Tarouca Research Institute for Landscape and Ornamental Gardening - This arboretum is located in South Moravia and features over 5,000 plant species, including many rare and endangered species.

5. Krkonoše National Park - This national park is located in the Krkonoše Mountains and features unique alpine flora, including many endemic and rare plant species.

6. Botanical Garden of Třeboň - This garden is located in South Bohemia and features a large collection of aquatic and wetland plants, as well as a Japanese garden and an arboretum.