Rail travel: Eurostar reservations

Which scenic coastal lighthouses are open to the public and which require advance reservations?

Is it worth buying a rail pass for Norway?

Are museums and galleries worth visiting and do they require reservations?

Should I buy train tickets in advance and what rail pass options exist for Italy?

Are there many hiking trails suitable for beginners and families?

Can I camp on the Inca Trail or other treks without a guide?

Are trails and tea houses open after recent flooding and landslides?

Are there family friendly hiking trails in Illinois suitable for young children?