Most of us have fairly low expectations when it comes to airports, with our baseline requirements including food, drink and a working toilet. But some airports see themselves as a little bit more than portals to pass through and play host to some pretty unexpected things. These are the strangest things you'll see in airports.

This jungle boardwalk is a little oasis in the Kuala Lumpur International, with birdsong, real trees and a touch of typical Malaysian humidity. (The waterfall is fake, though, but you can’t have everything).

Launching in 2019 as part of a £726 million amusement park, which includes an indoor forest and hiking trails, this ‘waterfall’ is a 130-foot-high rain vortex gushing through the centre of Changi International in Singapore. This airport is consistently voted one of the best in the world and has plenty of other cool features.

This airport sits on former farmland once owned by the Dotson family. It also happens to be where many of the family members were buried after they passed away. While most of them were relocated, four were not. There aren’t headstones as such, but there are grave markers on the runway where they were laid to rest.

Vancouver International Airport is home to two exhibits that are a spin-off from the main aquarium in town. Mighty impressive they are too. One is a 114,000-litre main aquarium and the other is a smaller 1,800-litre jellyfish aquarium. All the marine life is native to the British Columbia area.

A spin on this all-season ice rink costs around £5 and will get you skates, gloves and a helmet. It’s in the basement of this airport in South Korea, open from 10am to 8pm.

Located in the VIP lounge, a dip in this outdoor swimming pool – which is currently still being built – means you can watch planes take off and land while you cool down. They’ve hired local architect local architect Antonio Segundo Imbert and even if you aren’t flying First Class or Business, you can pay to use it (for an eye-watering $125 per person per day).

Located on the mezzanine of the second busiest airport in the world, this garden is a little wonder. Its 928-square-feet features nearly 50 different kinds of vegetables and herbs. It uses carbon dioxide from the air and a mist sprays water on the plant roots. There are four restaurants in the area supplied by produce from the garden.

Nine airports in the world now have yoga rooms, Gatwick is the latest to join them. It’s located in the South Terminal, yoga mats are supplied and it's free to use so you can get your zen on before boarding.

Most people go to Nashville to hear music, and the experience doesn’t stop until you board your flight. Nashville airport has a roster of live music throughout the year. There are more than 700 performances annually and six performance spaces dotted around the airport.

There's a small exhibition of selected works from the most famous museum in Amsterdam, the Rijksmuseum, on the second floor of Amsterdam Schipol. Ten works by famous masters of the Dutch Golden Age such as Jacob van Ruisdael, Ferdinand Bol and Jan Steen are permanently on display and it’s free.

If you have a spare two hours to kill (and are nerdy for airport trivia) you can book a behind the scenes tour in Zurich airport. You'll whizz along the Skymetro shuttle, take a look at the hangars and how the baggage sorting system works. The cherry on top is the view from outdoor Observation Deck E, where you can watch planes landing, taking off and taxiing.

Located in terminal three is yet another record-breaker for Changi – the tallest slide in an airport. It’s an ideal place to tire out the kids before they get on the plane, and they say you can reach speeds of up to 20 feet per second. If you spend money in the airport, you can redeem it as a voucher to use the slide.

Increasingly, airports are providing places to have a kip between layovers and Dubai has one of the best. The Snooze Cube has enough space for your luggage and plays music while you sleep to drown out noise. It costs £15 an hour.

It’s the first butterfly garden in an airport in the world and great for entertaining the kids. This tropical garden is home to over 1,000 butterflies, made up of 40 different species, and a profusion of flowering plants, lush greenery and a 20-foot waterfall.

You have to pay £10 to use the rooftop pool here, but it also gives you access to the hot tub and shower facilities. There are sun loungers to recline on, so ideal for a tan top-up or a snooze on a long layover.

While the restaurants and cafés can be crowded, the gardens are a beautiful and quiet retreat at Dubai Airport. There are plenty of seats and even a fish pond, as well as a trickling stream.

Whether you’re after a snooze or a quiet space to work, Munich and Berlin’s Napcabs are state-of-the-art. Prices start from £10 per hour and there’s free internet access (not exactly conducive to napping, mind).

The world’s only airport brewery, Airbräu even do a sustainable beer for the environmentally conscious. As well as their regulars, they also have seasonal beers on offer and brewing sessions take place in the main restaurant. You can watch the process and see the 530-gallon kettles where the beer is stored. There are also guided tours.

Gibraltar is notorious for its lack of flat land, so officials have had to get creative with the dearth of suitable space for an airport. They built the runway through one of the nation's busiest roads, which means cars have to stop when planes take off and land. The runway also leads juts out into the ocean, making it a somewhat precarious landing. Here are a few more unusual airport landings around the world.

Rather unsurprisingly, San Francisco was the first airport to open a yoga room. There is dim lighting, utter quiet and phone-free peace. There’s no charge and it’s open 24 hours.

This course is actually sandwiched in between two runways. Called the Kantarat Golf Course, it’s owned by the Royal Thai Air Force and you have to go through a metal detector before you play. Although you can see Boeing 747s land as you're putting, it’s perfectly safe.

From nine-hole to 18-hole courses, GreenLive Air offers golf simulation inside the airport. There’s even a bar if you want to sink a few drinks while you play.

Watch out for the giant statue of Smaug the dragon from The Hobbit and its massive eye, which opens from time to time to freak people out. It joins the ranks of a statue of Gollum and – no joke – Gandalf riding an eagle. All are made by the Weta Workshop which produced all the special effects for the Lord of the Rings movies.

Where is the biggest cinema screen in Hong Kong? The airport, that’s where. The incredible IMAX cinema houses 350 people.

Like yoga, stress therapy dogs are becoming increasingly common in airports. In Phoenix, handlers walk the dogs around the airport, and if people are stressed out by delays or the prospect of flying, they can spend time with the dog. Called the Navigator Buddies program, it’s staffed by volunteers and their certified therapy dogs. Head here to see more about the animals working behind the scenes on your vacation.

Part of the airport’s Animal Assisted Therapy programme, Lilou is going down very well with stressed out passengers. Part of the Wag Brigade (which also includes therapy dogs) Lilou wears a “Pet Me!” vest uniform and is dressed in costumes ranging from a pink ballerina tutu to a pilot’s hat.

Helsinki has some pretty out-there art permanently dotted around at the airport as well as rotating temporary exhibitions from photography to contemporary art. It has a design gallery, photo exhibition and art gallery.

With a 330-yard driving range, as airport golf courses, the Sky 72 golf course is pretty impressive. Located in the International Business area it has generous opening times from 5.30am to 11pm.

The 3,000 gallon tank is in the food court part of the airport and houses about 40 fish. To clean the tank, a member of staff has to wear a scuba suit and dive right in as pictured.

Dubai airport has a massive gym complex if you want to squeeze in a workout before you head off. As well as high-end equipment, it also has a swimming pool. It costs £10 to use for an hour, and has steam rooms, saunas and toiletries.