List of time periods that are not recommended to visit

Easter Rising (1916)

 * Reason: One of the leaders is very weak due to tuberculosis and can easily be killed by diseases he has no immunity to.

Nazi Germany (1933-1945)

 * Reason: High-risk

American Civil War (1861-1865)

 * Reason: Travellers risk passing on diseases that werre undiscovered during this time period.