1.   Today, the National Park Service offers boat tours along the canals, narrow quiet canyons between imperious five-story brick buildings.

2.   Another focus is on the dolphins that swim in the bay and ocean, and several companies offer boat tours to watch them frolic in their natural habitat.

3.   Boat tours leave from there several times a day, giving visitors a good overview of what makes the Everglades a one-of-a-kind environment.

4.   Boat tours depart two locations in the city, several times a day, for the restored National Historic Site.

5.   Boat tours are booked out of Ho Chi Minh City.

6.   Boat tours, both around Stockholm itself and out into the archipelago, are plentiful.

7.   A boat tour of creeks and marshes nearby is also a part of the gardens.

8.   A pontoon boat tour runs Thursday-Tuesday from March to November.

9.   Ecology-themed boat tours are another popular way to take in the Upper Keys.

10.   Escape from Pompeii takes riders on a boat tour through the ruins of ancient Italy.