Luxor is so full of ancient sites, architectural wonders and stories from Egyptian history that a lover of ancient Egyptian history can spend weeks at this place.
(People like me jinki memory and knowledge of Egyptian history, both aren't great, might struggle a bit to absorb all the information that this beautiful city offers)
I came from Cairo to Luxor in an overnight train. Don't expect much from the trains - they are okay okay.
Luxor has several temples and ancient monuments that will leave you amazed. The ancient city is divided into two parts - East Bank and West Bank - both equally enchanting. Since I had only one day, I covered the bigger and the more popular sites.
(Those who have more time (and money) can do a cruise ride which starts at Luxor I guess and goes till Aswan. It is a 4 day trip on the Nile and is said to be really beautiful)
(1) Valley of Kings - This place is beyond imagination. Huge sand and rock mountains which hide in them several tombs of Pharoahs and Kings from thousands of years ago. While there are more than 60 tombs here, there are only around 10 which are open for visit by public. On one ticket, you can visit a maximum of 3 tombs and clicking photos will charge you additional 300 Egyptian ponds. Until and unless you are a big photography enthusiast, you can skip buying the photography ticket.
This is also the amazing place where you'll find the tomb and mummy of Tutan Khamun. While his mummy is safe in the burial box, you can see his daughter's mummy open and persevered in a glass box in his tomb. This is the first time I saw a mummy without the cover on the body and you'll be amazed to see the preserved body. In other tombs that you'll visit here, you'll find several interesting carvings and paintings on the wall, all carrying different messages. What is great is that the color of the ancient paintings is still intact in most of the tombs.
(2) The Temple of Hatshepsut (Hot Chicken Soup - This is what the guides tell you to remember the name): This temple is huge and beautiful. Though the ancient site has been damaged by (people from history - I am sorry I am really bad at remembering names), you are still going to love it. You'll find different sections of the memorial temple giving insights into life of Hatshepsut.
(3) Karnak Temple: This temple is massive. The sheer size of this temple will take you by awwe. While a lot of it is now damaged, try imagining it if it was intact and full of life and you'll be mind boggled. The temple closes early because they have to prepare for the light and the sound show. So make sure you plan your visit before 5 PM. I really wanted to attend the sound and light show here (have heard it's amazing), but I didn't have the time and energy to.
(4) Luxor Temple: Another amazing temple with several stories hidden in the ruins and the wall carvings.
PS: You will find mummies of some big names that you hear in Luxor in the Cairo Musuem. Good (not so good) to have a face (terrible black mummified face) to the names.
PPS: These beautiful temples at Luxor involve a lot of walking and there is a lot to discover through the wall carving and paintings. Covering the above four sites in one day was extremely tiring and honestly I couldn't enjoy the Luxor temple as much because I had no energy to walk.
PPPS: DO NOT plan a visit in summer months. The place was decently hot in April and we were lucky that the weather was very pleasant the day we planned our trip to Luxor. All the spaces are open and extremely difficult to cover during extreme heat days.