While you're there, don't miss the Emerald Buddha and nearby Wat Pho, which is home to the largest reclining Buddha in Thailand. Another must see is Wat Arun, the Temple of Dawn, which is stunning from a distance and intriguing close up, with its mosaic detailing, as you climb to the top.
Stand on the Thailand river bank, and you can look across to Burma/Myanmar and Laos, or hire a boat for a closer (and more intimate) look. You'll find market stalls, Buddha and elephant statues, and plenty of signage to confirm that, yes, this is the Golden Triangle.
This used to be a prolific opium-growing area; the exhibitions at the Hall of Opium, in Golden Triangle Park, offer a good introduction to the local history and effects of the industry, as well as the potency of the drug.
The elephant is Thailand's national symbol and a revered animal, and there are plenty of ways to encounter or work with the animals all over the country.
Whether you want to train to become a mahout, or simply learn more about these magnificent animals, check out the likes of Chiang Dao Elephant Camp and Thai Elephant Conservation Center.
To combine your elephant experience with luxury honeymoon accommodation, try Anantara Golden Triangle and Elephant Hills; both establishments offer comfortable tented camps, and opportunities to trek with the animals.
Thailand has over 8,000km of coastline just waiting to be explored. Travel by long-tail boat and discover as many beaches and islands as possible. See Phang Nga Bay and the limestone rocks that are so famously photographed off Thailand's west coast, or island hop in the Andaman Sea off of Phuket and Krabi. Here's you'll discover white-sand beaches and abundant snorkelling on Ko Phi Phi Lee and Ko Phi Phi Don.
The calm sea and clear conditions are perfect for kayaking, too. It's a great way to explore the islands without the masses of tourist boats or passenger ferries, and take the experience at your own pace. The coastlines of Koh Phan Ngan, Koh Tao and Koh Samui in the Gulf of Thailand are particularly picturesque.
Akha, Lisu, Hmong and Karen tribes are found across the north of Thailand. Take a break from the tourist trail, and spend a day or a few nights with a local family to learn and experience their way of life.
Visitors are very welcome to join in local celebrations, and most festivals and events offer a unique insight into local customs and traditions. Must see events include Loi Krathong and the famous floating lanterns in November, Songkran/Thai New Year water festival in April, and the Naga Fireballs in October - a natural phenomenon that occurs just once a year.
Kanchanaburi province, an area of lush forest and a haven for backpackers, has a dark past. Here, you'll also find the start of the infamous Death Railway (which links to Burma/Myanmar), and the bridge over the River Kwai. Both are haunting relics from WWII, constructed by prisoners of war. It's a chilling spot, but essential on any Thailand itinerary - especially if you love history as much as you love your spouse.
Our favourite national parks include: Doi Inthanon National Park (home to Thailand's highest peak); Khao Yai National Park (considered to be one of Asia's largest monsoon forests and a UNESCO World Heritage Site); Sai Yok National Park (with several waterfalls, caves and rare animals to discover); Khao Sok National Park (considered the finest in southern Thailand).
10. Shop 'til you drop!
In Bangkok, try any of the following markets: Chatuchak (JJ Mall); Weekend Market (Sat/Sun), all day; Asiatique Night Market (riverside), open 4pm - midnight, seven days a week.
This article originally appeared on the Tourism Thailand blog - the official blog for tourists and travellers visiting Thailand. Find more tips, inspiration and advice online here.