Here is an idea of what you could see 

Get behind the wheel of a four-person golf cart and set off on an ‘all day’ adventure of Grand Turk. Stop for multiple photo opportunities. 

Admire astronaut John Glenn's space capsule and snap a photo of the Jags McCartney Monument in honour of the only named National Hero in the Turks and Caicos Islands. Visit the Baby Donkeys at North Creek. 

Some of the more prominent structures include the Post Office and the adjacent Government Offices Plaza with 1700s cannons, the Grand Turk Masonic Lodge, St Mary's Anglican Church, and the Victoria Library.

Drive on Lighthouse Road , following the northern ridge on Grand Turk, with great views of the ocean, and Gibbs Cay can also be seen to the east. At the conclusion of this route is the Grand Turk Lighthouse. There’s a minor fee to enter the grounds and coastal cliff path (recommended), but this 1852 structure can be seen well from the road. 

The Grand Turk Lighthouse grounds are worth the entry cost as they also allow access to a coastal trail that overlooks the scenic North Reef and the abandoned U.S. Navy NAVFAC 104 Base. 

The Turks and Caicos National Museum is a great place to visit. An historical collection is housed in the colonial Guinep House, and includes artifacts and displays on the Taino people, the oldest excavated European shipwreck in the New World (found near West Caicos), the salt industry, ship salvaging, and more.

The small oceanfront Cockburn Town is also fun to explore. beaches with crystal-clear water, British Bermudian Colonial architecture, and old villas 

Discover the unusual salt ponds, which serve as a nesting area for pink flamingos and brown pelicans, then zip along downtown Front Street to admire the architecture and pause to check out the colourful boutiques and local arts and crafts stalls.

Visit the Governor's Beach. Why not end your day on the soft sandy beaches, take a refreshing dip in the inviting waters, snorkel the reefs to see amazing marine life after enjoying the last looks at the island's natural scenic highlights to end your day. 

There is so much more you can see, under our own steam, in your own time, rather than the few limited hours tours being sold on cruise lines for a great deal more money.