Kuala Lumpur is the only city in the world that has a natural rainforest situated right at its centre. The KL Forest Eco Park (formerly know as the Bukit Nanas Forest Reserve) was gazetted as a forest reserve in 1906 and is one of the oldest in Malaysia. Situated near the forest is one of the city's skyline icons, the Kuala Lumpur Tower, which was constructed with utmost attention being paid to the environment to ensure that the natural surroundings of KL Forest Eco Park remain undisturbed.