1 . Slowing down was the last thing on Elaine Schaefer's mind when she turned 70 last year. She'd enjoyed an ambitious travel schedule for the previous decade. She didn't feel too old to travel.

Yet many people are asking that slightly embarrassing question: Can you be too old to travel? The travel industry has already responded. Try renting a car in Europe, for example. In Croatia, Schaefer wouldn't be able to this year, because the maximum age is 70. Insurance companies require higher rates; tour operators limit certain activities. That feels like a " no" for many travelers.

Definitely some folks should think twice before traveling, but not only based on their age. It's their level of fitness, says Kirsten Veldman, a former tour guide who now edits a retirement blog. She recalls a 93-year-old who was disabled and traveling alone on a Caribbean tour. "You can't expect to ask a tour leader to be there for you 24/7 for medical care. " she says. "Tour guides don't have the time, skills, and knowledge for it. So, in this case, my advice is: he shouldn't have traveled with us in this situation. "

But some tour operators serve older travelers. For example, Grand Circle Travel started in 1958 to serve senior members. “We have travelers into their 80s and even 90s. Some travel as a couple and some alone,” says company spokeswoman Ann Shannon. “We have no age limit.”

If you ask travel experts, they'll tell you that age is just a number. It's a question of physical, and to a certain extent, mental ability. "Many of our travelers are retired, focused on keeping their good health, and are experienced travelers who have a good idea of what to expect, "says Sara Baer-Sinnott, president of Oldways, a food and nutrition nonprofit that operates tours. "Someone in their 40's may struggle more than someone in their 80s. "

2 . Most Famous Libraries in the World

Trinity College Library

Designed by Thomas Burgh, the library is the largest in Ireland. Construction on the Long Room, the library’s 65-meter-long main hall, began in 1712 and lasted 20 years. The original structure only had books on the lower level, but when the library’s shelves were filled in the 1850s, the ceiling was raised to accommodate even more books. Today the Long Room holds 200,000 of the library’s oldest books.

Stuttgart City Library

Opened in 2011, the German library is a splendid light-gray cube consisting of glass blocks designed by Eun Young Yi. Inside it, you’ll find an airy central room, above which sits a multi-story stepped reading room lined with bookshelves. The library towers over the nearby buildings.

Library of Parliament

Taking the form of a Victorian Gothic chapter house complete with 16 flying buttresses, the 1876 Library of Parliament is one of Canada’s prized architectural treasures — it’s on the ten-dollar bill. Architects Thomas Fuller and Chilion Jones took inspiration from the British Museum Reading Room for the structure, lining the central hall with delicate wood shelves and wood carvings.

Rampur Raza Library

Founded in the late 18th century, the Indian library is home to a massive collection of Islamic and Asian texts and objects. The pink structure that houses the collection today was built in 1904 by Nawab Hamid Ali Khan as a mansion of Indo-European style, The Rampur Raza Library was later shifted to this grand building in 1957.