The Dwarkadhish Temple is a Hindu temple which is dedicated to Lord Krishna. It is one of the four main temples in India's Char Dham pilgrimage and is a must-visit for all tourists. The temple is built in limestone with a 5-story spire, which is supported by 72 pillars. You can also attend the morning and evening aarti ritual, which is a must-see.
The Regional Science Centre is an interactive science museum for kids and adults. The center has various interactive exhibits, including a walk-through digestive system, a large pendulum, a 3D cinema, and much more. The center also has a planetarium that shows various space and astronomy-related shows that are worth watching.
Gomti Ghat is a popular spot among tourists. The Ghat is located at the confluence of River Gomti and Arabian Sea and is a great location to experience a beautiful sunset. You can take a boat ride along the creek that leads to the sea and see marine life up close. The ghat is also a good location to taste street food like Bhel Puri and Pani Puri.
If you have extra time, you can visit Bet Dwarka Island, which is a few kilometers away from Dwarka. There are boat services that take visitors to the island. You could also consider extending your stay and exploring Somnath, which is a few hours drive from Dwarka. If you have less time, you can skip the Science Centre and explore other historical places in Dwarka like Rukshamanee Mandir and Nageshwar Jyotirlinga Temple.