Croatia
This museum was shockingly fantastic and is totally worth the visit. It features expressionistic paintings by untrained Croatian peasant artists between the 1930s-1980s. Evidently in the 19th century the art world began embracing self-trained artists.
New Zealand | North Island
The National Museum in Wellington is free in a great attraction. Thereare a variety of floors that explore different things including a great World War 1 exhibit that focuses on Gallipoli, as well as sites and artifacts from the Maoris, the natural and other historical features of New Zealand.
Spain
Sevilla's Alcazar is the oldest royal palace still in use.
Spain
Toledo's museum which tells Spain's military history from 1492 to the 1900s. Spain has a very famous military history and this museum certainly does it justice.
Spain
Ronda is where modern bullfighting was born and this was the first purpose built ring (before that fights were using conducted in the main plazas. Even if you are morally opposed to the "sport" its part of Spain and the sight here is fascinating. There is an interesting museum and then you can wander out into he ring and salute your 5,000 fans.
New Zealand | North Island
Fantastic collection of Maori artifacts / buildings , but a whole lot more. (seek out the Moa skeleton - hunted to extinction the birds were 9 feet tall). Lots of stuff to see - allow a couple hours…
Vietnam
The second-largest art museum in Vietnam (after the Vietnam National Museum of Fine Arts in Hanoi), the Hồ Chí Minh City Museum of Fine Arts isn't that impressive. It's located in a beautiful building designed by a French architect, but the collection isn't hugely interesting.
Vietnam
Museum about the history of the Vietnam War. Outside the museum is a large collection of American military power: tanks, artillery, helicopters, and jets. The inside is mostly photos, with captions, as well as some short written accounts. Most of the exhibits depict atrocities committed by the American military or South Vietnamese army.
Vietnam
Initially created by communist forces fighting the French in the 1940s, the Cu Chi tunnels were expanded to a network of some 150 miles during the Vietnam war. Viet Cong soldiers used them as shelters, transportation and communications routes, hospitals, and food and weapons caches. Today, the tunnels are the site of a museum.
United States | Washington, D.C.
The National Portrait Gallery's focuses on portraits of famous Americans. Its most popular attraction is presidential portrait gallery, which has an entry for every U.S. president. While it's technically an art museum the National Portrait Gallery is also a history and biographical museum—you'll learn a lot about the people whose portraits hang in the gallery and the times in which they lived.