Traveling is expensive, so it’s nice when I don’t have to shell out some cash in order to see something (usually a museum, but not always). This page lists establishments that either offer free admission at all times, or waive the fee on certain days. It’s not a comprehensive list, just the stuff that I know about from having personally visited.
As always, it’s best to check an establishment’s website for the latest information.
Vienna
Several branches of the Vienna Museum offer free admission on the first Sunday of the month.
MAK (Museum für angewandte Kunst/Museum of Applied Arts) offers free admission every Tuesday evening from 18:00 to 22:00
The Museum of Military History offers free admission on the first Sunday of the month.
Museums and various institutions (like Parlament) offer free or reduced admission on Austrian National Day, October 26.
London
There are many terrific free things in London.
Victoria and Albert Museum
British Museum
Tate Britain
Tate Modern
British Library
Geffrye Museum
Museum of London
Gresham College Lecture Series
Bishopsgate Lunchtime Concerts
The National Gallery
St.Bartholomew’s Hospital Museum
Hunterian Museum
Sir John Soane’s Museum
Horniman Museum
Royal Courts of Justice
Grant Museum of Zoology
Oxford
Ashmolean
Pitt Rivers Museum
Oxford University Museum of Natural History
Evensong at Christ Church College Cathedral
Edinburgh
National Museum of Scotland
Scottish National Gallery
Scottish National Portrait Gallery
Scottish National Gallery of Modern Art
Glasgow
Kelvingrove Art Gallery and Museum
The Hunterian
Oakland, California
Oakland Museum of California offers free admission on the first Sunday of the month.
Washington, D.C.
Most branches of the Smithsonian and National Zoo
National Gallery of Art
Leipzig
Museum in der Runden Ecke (former headquarters of the Stasi)
Schulmuseum
Cheese Skipping 