Twain's home was considered whimsical since it resembled one of the steam riverboats that plied up and down the Mississippi River.
Memphis Mississippi riverboats offer an array of different cruises along the Mississippi River.
For example, several are named for Civil War battles or old riverboats or river towns.
The fact is riverboats are packed with amenities, many of which would be found on any major cruise line.
Riverboats used for cruises are larger and more modern today than they were just a few decades ago.