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Photo: Formulax, CC BY-SA 2.0 via Wikimedia Commons
KL Tower has a viewing deck at 276bm provides great city views, and you'll be a few metres higher than the Twin Towers since the tower is built on a hill (also, the twin towers observation deck is 100 m below at 170 m). The outdoor Sky Deck and indoor Observation Deck require separate tickets, or a discounted combo ticket, but when it isn't raining, there is little reason to visit the lower indoor deck with not much to see inside the deck itself and the same view you get from the outside deck. For a free bonus, check out the wonderfully bombastic free film on the tower's construction, screened in a little cinema on the tower ground floor. There is free shuttle bus service from the main gate to the base of the tower, though number of seats in the bus is very limited. Around the tower are various attractions including pony rides, KL Animal Zone and a Malaysian cultural village exhibition. Tickets for these attractions can be purchased separately or as part of a combo with the KL Tower ticket.
The Kuala Lumpur Tower, colloquially referred to as KL Tower, is a 421-meter-tall (1,381-foot) telecommunication tower in Kuala Lumpur, Malaysia. It is the world's seventh-tallest telecommunication tower. It features an antenna which increases its height to 421 metres (1,381 ft). The roof of the pod is at 336.5 metres (1,104 ft). The rest of the tower below has a stairwell and an elevator to reach the upper area, which also contains a revolving restaurant, providing diners with a panoramic view of the city.
© OpenStreetMap contributors
formerly Bukit Nanas Forest Reserve
Being the last virgin tropical rainforest left in Kuala Lumpur, this is certainly not your typical urban park. If lucky you may even be able to spot some wildlife, including birds, monkeys, lizards and even the occasional snake. The trails are not that challenging but be sure to bring comfortable shoes, water and even some repellent can come in handy. A camping ground is also available for those wanting to camp under the stars (another RM40).
Telecommunications Museum
Built in 1928 as the Central Battery Telephone Exchange, converted into the Telecommunications Museum in 1994, showing the growth of communications technology in Malaysia. A rather limited amount of antique telecom equipment on display.
A gigantic aquarium housing over 5,000 aquatic and terrestrial species. The aquarium has many displays including an underwater tunnel, interactive touch pools, exhibits of flora and fauna and multimedia kiosks. They also have feeding sessions throughout the day at specific exhibits, see their website for specific times.
Menara Berkembar Petronas
Perhaps the most iconic building of Malaysia and the tallest twin building in the world. Visitors first head up to the Skybridge at level 41-42, one of the highest suspended bridges in the world, before going up to level 86 to marvel at Kuala Lumpur from the observation deck. There are also displays and informational videos about the tower and its construction. Tickets can be purchased online or at the base of the tower. A ticket allows you access during a specific time block only and are limited, so either turn up early or purchase online in advance.
Take a plunge (literally) and explore Aquaria KLCC with the resident aquatic animals. The Cage Rage package takes you underwater in the safety of a cage. Be sure to say hello to the sharks when down there. The Dive with Sharks package is definitely for who are more adventurous, where you can explore the underwater area without a cage and get up close to the aquatic life. You also get a certificate and t-shirt to remember your close encounter.
Dewan Filharmonik Petronas
The home of the well-regarded Malaysian Philharmonic Orchestra is nestled at the base of the Petronas Twin Towers, offering performances of classical music most Saturdays at 8:30PM and Sundays at 3PM, with tickets starting at just RM25. Advance bookings are possible online. Note that a strict dress code applies: long sleeve batik or lounge suit for gala and evening performances, "smart casual" (no jeans, shorts, T-shirts, sneakers and slippers) for other performances.