Bt-Fg app

About Bt-Fg app

Bt-Fg app is an informational guide to ten of the world's most remarkable libraries — from the legendary Library of Alexandria to modern national collections. Each one has its own story of scale, architecture, and the role it played in preserving human knowledge.

Inside the app you'll find the Library of Alexandria, the most famous library of the ancient world; the Vatican Apostolic Library; the royal Real Biblioteca del Escorial in Spain; Oxford's Bodleian Library; the Baroque frescoed halls of Strahov Library in Prague; the iconic Long Room at Trinity College Library in Dublin; Admont Abbey Library, the largest monastic library in the world; the Library of Congress, the largest library on Earth by number of items; Boston Public Library, the first large free municipal library in the US; and the National Library of China.

Every library has its own page with a short history, a quick facts table, a few frequently asked questions, and illustrated day and night views. A timeline on the home page traces how libraries evolved from 280 BCE to 1909, and you can search or filter them by era.

Features:

A quick facts table and FAQ on every library's page
Illustrated day and night views for each location
An interactive timeline spanning over two thousand years
Search and filter libraries by historical era
A 5-question quiz to test what you've learned
Clean, distraction-free browsing with no account required

The app does not collect or store any personal data. Your quiz scores stay only on your device and are never sent anywhere else.

Whether you're a book lover, a history enthusiast, or just curious about the world's most beautiful libraries, Great Libraries is a simple, informative companion for exploring some of the most remarkable collections ever built.