These lavish gardens were constructed in 1694 as a residential retreat for Mitsutomo, the second Lord of the Owari clan. Sadly, however, most of the garden and its buildings were destroyed during World War II. The restoration took a long time, with the garden being finally opened as a public park in 2004. If time permits, visit the adjacent Tokugawa Art Museum, the third oldest private museum in Japan, which miraculously survived the World War II air raids.

The mangrove tunnels of nearby La Boquilla are an easy day trip from Cartagena. Guided tours will often combine a visit to the beach (one of the Playas De La Boquilla) with a boat or canoe tour of the mangroves, passing through Cienaga de Juan Polo and the Cienaga de la Virgen lagoons. Some tours will also include a closer encounter with local fishermen and offer insight into their craft. La Boquilla is an area of contrasts: the district of upscale hotels — Morros — borders on humble neighbourhoods populated by workers. When sitting down to tuck into no-frills seafood dishes served up by local eateries, make sure you're clear about the price of each item ordered from the get-go, as there have been reports of "surprise" bills amounting to several hundred US dollars.

The huge Toyota Museum is a must-visit for all those interested in automotive history. The automotive pavilion features a great range of vintage trucks and cars, while kids will love spending their time in the Technoland, a hands-on series of interactive displays. The Textile Machinery Pavilion offers a throwback to the time when the textile Industry was the main industry of Japan.