If you can tear yourself away from the beach, visit the small capital Banjul. There, you'll find Arch 22, built to commemorate the country's independence, and the National Museum, which provides an interesting insight in the culture and history of the country. The city is situated on St Mary's Island at the mouth of the River Gambia and is quite a strange place, given the mix of colonial architecture, shanty towns and modern office blocks. Beer-lovers can take a tour of the Banjul Brewery and sample a sip of the locally produced Julbrew.
Jufureh is a popular small town. It rose to fame as the home of Kunte Kinte, the ancestor of Alex Haley in Roots, the book and 1970s TV series. There's a popular, half day 'Roots' tour which takes in the village itself, a former French trading post and the former slave fortress, James Island. If you're lucky, you may spy the odd dolphin on your way out there.
If you want to get away from the beach for a day or two, you could set off on an inland safari. There are a few camps in rural Gambia where you'll find basic accommodation. Camps like Tendaba act as a great base from which to explore. In the Gambian bush, you'll find more birds, bush hogs and lots of other wildlife and you can venture out in a 4x4 or along the river in a canoe. Back at the camp, the Bamboo Bar is the perfect place to compare notes with other guests over a cold beer.
In the capital, you could also take a sunset cruise along the River Gambia's tributaries (known as bolongs) or paddle along in a wooden pirogue to Oyster Creek, the main stretch of water separating Banjul from the mainland.